NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data H (all spectra) 1 Data Row Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells	Ground Level	Ionization Energy (eV)	Uncertainty (eV)	References
1	H I	0	Hydrogen	H	1s	²S_¹/₂	(13.59843449)	0.00000008	HDEL

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Spectra Database Ionization Energies Data He (all spectra) 2 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
2	He I	0	Helium	He	1s²	¹S₀	1s ²S_1/2	24.58738880	0.00000015	L17714
2	He II	+1	Helium	H	1s	²S_¹/₂		(54.4177650)	0.0000003	L7188c95

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Li (all spectra) 3 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
3	Li I	0	Lithium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	5.39171495	0.00000004	L12261
3	Li II	+1	Lithium	He	1s²	¹S₀	1s ²S_1/2	[75.6400964]	0.0000013	L10054
3	Li III	+2	Lithium	H	1s	²S_¹/₂		(122.4543581)	0.0000008	L3620c96

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Be (all spectra) 4 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
4	Be I	0	Beryllium	Be	1s²2s²	¹S₀	2s ²S_1/2	9.322699	0.000007	L5964
4	Be II	+1	Beryllium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	18.21115	0.00004	L12158
4	Be III	+2	Beryllium	He	1s²	¹S₀	1s ²S_1/2	[153.896203]	0.000004	L10054
4	Be IV	+3	Beryllium	H	1s	²S_¹/₂		(217.7185843)	0.0000017	L3620c97

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data B (all spectra) 5 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
5	B I	0	Boron	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	8.298019	0.000003	L12312
5	B II	+1	Boron	Be	1s²2s²	¹S₀	2s ²S_1/2	25.15483	0.00005	L12120
5	B III	+2	Boron	Li	1s²2s	²S_¹/₂	1s² ¹S₀	37.93058	0.00007	L12547
5	B IV	+3	Boron	He	1s²	¹S₀	1s ²S_1/2	259.3715	0.0025	L12548
5	B V	+4	Boron	H	1s	²S_¹/₂		(340.226020)	0.000003	L12548

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data C (all spectra) 6 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
6	C I	0	Carbon	C	1s²2s²2p²	³P₀	2s²2p ²P°_1/2	11.2602880	0.0000011	L20057
6	C II	+1	Carbon	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	24.383154	0.000016	c190
6	C III	+2	Carbon	Be	1s²2s²	¹S₀	2s ²S_1/2	47.88778	0.00025	L876c191
6	C IV	+3	Carbon	Li	1s²2s	²S_¹/₂	1s² ¹S₀	64.49352	0.00019	L11667
6	C V	+4	Carbon	He	1s²	¹S₀	1s ²S_1/2	[392.090515]	0.000025	L10054
6	C VI	+5	Carbon	H	1s	²S_¹/₂		(489.993194)	0.000007	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data N (all spectra) 7 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
7	N I	0	Nitrogen	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	14.53413	0.00004	L1411
7	N II	+1	Nitrogen	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[29.60125]	0.00009	L11770
7	N III	+2	Nitrogen	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[47.4453]	0.0025	L11770
7	N IV	+3	Nitrogen	Be	1s²2s²	¹S₀	2s ²S_1/2	77.4735	0.0004	L7288,L876
7	N V	+4	Nitrogen	Li	1s²2s	²S_¹/₂	1s² ¹S₀	97.8901	0.0004	L4829
7	N VI	+5	Nitrogen	He	1s²	¹S₀	1s ²S_1/2	[552.06732]	0.00004	L10054
7	N VII	+6	Nitrogen	H	1s	²S_¹/₂		(667.046116)	0.000013	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data O (all spectra) 8 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
8	O I	0	Oxygen	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	13.618055	0.000007	L74,L3760
8	O II	+1	Oxygen	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	35.12112	0.00006	L11267,L10621
8	O III	+2	Oxygen	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[54.93554]	0.00012	L11770
8	O IV	+3	Oxygen	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	77.41350	0.00025	L648
8	O V	+4	Oxygen	Be	1s²2s²	¹S₀	2s ²S_1/2	113.8990	0.0005	L7288
8	O VI	+5	Oxygen	Li	1s²2s	²S_¹/₂	1s² ¹S₀	[138.1189]	0.0021	L4713
8	O VII	+6	Oxygen	He	1s²	¹S₀	1s ²S_1/2	[739.32682]	0.00006	L10054
8	O VIII	+7	Oxygen	H	1s	²S_¹/₂		(871.40988)	0.00003	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data F (all spectra) 9 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
9	F I	0	Fluorine	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	17.42282	0.00005	L7481,L526
9	F II	+1	Fluorine	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	34.97081	0.00012	L369
9	F III	+2	Fluorine	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[62.70798]	0.00025	L11770
9	F IV	+3	Fluorine	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[87.175]	0.017	L11770
9	F V	+4	Fluorine	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[114.249]	0.006	L11770
9	F VI	+5	Fluorine	Be	1s²2s²	¹S₀	2s ²S_1/2	157.16311	0.00025	L6491
9	F VII	+6	Fluorine	Li	1s²2s	²S_¹/₂	1s² ¹S₀	[185.1868]	0.0006	L6335
9	F VIII	+7	Fluorine	He	1s²	¹S₀	1s ²S_1/2	[953.89804]	0.00010	L10054
9	F IX	+8	Fluorine	H	1s	²S_¹/₂		(1 103.11747)	0.00005	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Ne (all spectra) 10 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
10	Ne I	0	Neon	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	21.564540	0.000007	L8826,L1407
10	Ne II	+1	Neon	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	40.96297	0.00004	L1406
10	Ne III	+2	Neon	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	63.4233	0.0003	L9091
10	Ne IV	+3	Neon	N	1s²2s²2p³	⁴S°_³/₂	2s²2p² ³P₀	[97.1900]	0.0025	L11782
10	Ne V	+4	Neon	C	1s²2s²2p²	³P₀	2p ²P°_1/2	126.247	0.012	L11744
10	Ne VI	+5	Neon	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	157.934	0.005	L9340
10	Ne VII	+6	Neon	Be	1s²2s²	¹S₀	2s ²S_1/2	207.271	0.012	L9089
10	Ne VIII	+7	Neon	Li	1s²2s	²S_¹/₂	1s² ¹S₀	[239.0970]	0.0019	L9090
10	Ne IX	+8	Neon	He	1s²	¹S₀	1s ²S_1/2	[1 195.80783]	0.00015	L10054
10	Ne X	+9	Neon	H	1s	²S_¹/₂		(1 362.19915)	0.00009	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Na (all spectra) 11 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
11	Na I	0	Sodium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	5.1390769	0.0000003	L10921,L9648
11	Na II	+1	Sodium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	47.28636	0.00025	L914
11	Na III	+2	Sodium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[71.6200]	0.0012	L5793,L2720
11	Na IV	+3	Sodium	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[98.936]	0.012	L11770
11	Na V	+4	Sodium	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	138.404	0.012	L7482
11	Na VI	+5	Sodium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[172.23]	0.05	L11770
11	Na VII	+6	Sodium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[208.504]	0.012	L11770
11	Na VIII	+7	Sodium	Be	1s²2s²	¹S₀	2s ²S_1/2	[264.192]	0.022	L11770
11	Na IX	+8	Sodium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(299.856)	0.007	L16264c99
11	Na X	+9	Sodium	He	1s²	¹S₀	1s ²S_1/2	(1 465.13449)	0.00003	L13237
11	Na XI	+10	Sodium	H	1s	²S_¹/₂		(1 648.70218)	0.00012	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Mg (all spectra) 12 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
12	Mg I	0	Magnesium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	7.646236	0.000004	L10635,L6969
12	Mg II	+1	Magnesium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	15.035271	0.000006	L10635
12	Mg III	+2	Magnesium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	80.1436	0.0006	L4995,L1434
12	Mg IV	+3	Magnesium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[109.2654]	0.0012	L4995,L2720
12	Mg V	+4	Magnesium	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[141.33]	0.03	L11770
12	Mg VI	+5	Magnesium	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[186.76]	0.06	L10635
12	Mg VII	+6	Magnesium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[225.02]	0.06	L11770
12	Mg VIII	+7	Magnesium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[265.924]	0.019	L11770
12	Mg IX	+8	Magnesium	Be	1s²2s²	¹S₀	2s ²S_1/2	[327.99]	0.04	L11770
12	Mg X	+9	Magnesium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(367.489)	0.007	L16264c99
12	Mg XI	+10	Magnesium	He	1s²	¹S₀	1s ²S_1/2	(1 761.80487)	0.00020	L12128
12	Mg XII	+11	Magnesium	H	1s	²S_¹/₂		(1 962.66365)	0.00012	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Al (all spectra) 13 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
13	Al I	0	Aluminum	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	5.985769	0.000003	L7215,L10321
13	Al II	+1	Aluminum	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	18.82855	0.00005	L7215
13	Al III	+2	Aluminum	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	28.447642	0.000025	L4714,L277
13	Al IV	+3	Aluminum	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	119.9924	0.0019	L4714,L2829
13	Al V	+4	Aluminum	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[153.8252]	0.0025	L4714,L3565
13	Al VI	+5	Aluminum	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[190.49]	0.05	L7215
13	Al VII	+6	Aluminum	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[241.76]	0.09	L7215
13	Al VIII	+7	Aluminum	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[284.64]	0.07	L11770
13	Al IX	+8	Aluminum	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[330.21]	0.04	L11770
13	Al X	+9	Aluminum	Be	1s²2s²	¹S₀	2s ²S_1/2	[398.65]	0.06	L11770
13	Al XI	+10	Aluminum	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(442.005)	0.007	L16264c99
13	Al XII	+11	Aluminum	He	1s²	¹S₀	1s ²S_1/2	(2 085.97700)	0.00020	L12128
13	Al XIII	+12	Aluminum	H	1s	²S_¹/₂		(2 304.14005)	0.00025	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Si (all spectra) 14 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
14	Si I	0	Silicon	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	8.15168	0.00003	L5815
14	Si II	+1	Silicon	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	16.34585	0.00004	L5815
14	Si III	+2	Silicon	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	33.49300	0.00009	L5815
14	Si IV	+3	Silicon	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	45.14179	0.00007	L5815,L6098
14	Si V	+4	Silicon	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	166.767	0.003	L3934
14	Si VI	+5	Silicon	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[205.279]	0.005	c192
14	Si VII	+6	Silicon	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[246.57]	0.05	c193
14	Si VIII	+7	Silicon	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[303.59]	0.05	c193
14	Si IX	+8	Silicon	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[351.28]	0.06	c193
14	Si X	+9	Silicon	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[401.38]	0.04	L11770
14	Si XI	+10	Silicon	Be	1s²2s²	¹S₀	2s ²S_1/2	[476.273]	0.019	c192
14	Si XII	+11	Silicon	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(523.415)	0.007	L16264c99
14	Si XIII	+12	Silicon	He	1s²	¹S₀	1s ²S_1/2	(2 437.65813)	0.00020	L12128
14	Si XIV	+13	Silicon	H	1s	²S_¹/₂		(2 673.17753)	0.00025	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data P (all spectra) 15 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
15	P I	0	Phosphorus	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	10.486686	0.000015	L5148
15	P II	+1	Phosphorus	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[19.76949]	0.00004	L11770
15	P III	+2	Phosphorus	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	30.20264	0.00009	L7147
15	P IV	+3	Phosphorus	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	51.44387	0.00012	L7147
15	P V	+4	Phosphorus	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	65.02511	0.00012	L7147,L2613
15	P VI	+5	Phosphorus	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[220.430]	0.005	L11770
15	P VII	+6	Phosphorus	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[263.57]	0.06	L7147
15	P VIII	+7	Phosphorus	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[309.60]	0.10	L7147
15	P IX	+8	Phosphorus	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[372.31]	0.21	L11770
15	P X	+9	Phosphorus	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[424.40]	0.09	L11770
15	P XI	+10	Phosphorus	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[479.44]	0.05	L11770
15	P XII	+11	Phosphorus	Be	1s²2s²	¹S₀	2s ²S_1/2	[560.62]	0.10	L11770
15	P XIII	+12	Phosphorus	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(611.741)	0.007	L16264c99
15	P XIV	+13	Phosphorus	He	1s²	¹S₀	1s ²S_1/2	(2 816.90876)	0.00020	L12128
15	P XV	+14	Phosphorus	H	1s	²S_¹/₂		(3 069.8415)	0.0004	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data S (all spectra) 16 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
16	S I	0	Sulfur	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	10.36001	0.00012	L7237
16	S II	+1	Sulfur	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	23.33788	0.00025	L7237,L5883
16	S III	+2	Sulfur	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[34.86]	0.04	L11770
16	S IV	+3	Sulfur	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[47.222]	0.012	L7237
16	S V	+4	Sulfur	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	72.5945	0.0004	L7237
16	S VI	+5	Sulfur	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	88.0529	0.0004	L7237,L4882
16	S VII	+6	Sulfur	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	280.954	0.007	L9896
16	S VIII	+7	Sulfur	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	328.794	0.007	L11242
16	S IX	+8	Sulfur	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[379.84]	0.21	L11770
16	S X	+9	Sulfur	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[447.7]	0.3	L11770
16	S XI	+10	Sulfur	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[504.55]	0.12	L11770
16	S XII	+11	Sulfur	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[564.41]	0.05	L11770
16	S XIII	+12	Sulfur	Be	1s²2s²	¹S₀	2s ²S_1/2	[651.96]	0.12	L11770
16	S XIV	+13	Sulfur	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(706.994)	0.007	L16264c99
16	S XV	+14	Sulfur	He	1s²	¹S₀	1s ²S_1/2	(3 223.7807)	0.0003	L12128
16	S XVI	+15	Sulfur	H	1s	²S_¹/₂		(3 494.1879)	0.0005	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Cl (all spectra) 17 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
17	Cl I	0	Chlorine	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	12.967632	0.000016	L19191
17	Cl II	+1	Chlorine	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	23.81364	0.00012	L1617
17	Cl III	+2	Chlorine	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[39.80]	0.11	L11770
17	Cl IV	+3	Chlorine	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[53.24]	0.12	L11770
17	Cl V	+4	Chlorine	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[67.68]	0.10	L11770
17	Cl VI	+5	Chlorine	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[96.94]	0.04	L11770
17	Cl VII	+6	Chlorine	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	114.2013	0.0006	L6356
17	Cl VIII	+7	Chlorine	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	348.306	0.007	L6972
17	Cl IX	+8	Chlorine	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	400.851	0.012	L9369
17	Cl X	+9	Chlorine	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[456.7]	0.4	L11770
17	Cl XI	+10	Chlorine	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[530.0]	0.4	L11770
17	Cl XII	+11	Chlorine	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[591.58]	0.19	L11770
17	Cl XIII	+12	Chlorine	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[656.30]	0.12	L11770
17	Cl XIV	+13	Chlorine	Be	1s²2s²	¹S₀	2s ²S_1/2	[750.23]	0.19	L11770
17	Cl XV	+14	Chlorine	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(809.198)	0.007	L16264c99
17	Cl XVI	+15	Chlorine	He	1s²	¹S₀	1s ²S_1/2	(3 658.3437)	0.0003	L12128
17	Cl XVII	+16	Chlorine	H	1s	²S_¹/₂		(3 946.2909)	0.0006	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Ar (all spectra) 18 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
18	Ar I	0	Argon	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	15.7596117	0.0000005	L9217
18	Ar II	+1	Argon	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	27.62967	0.00012	L8844
18	Ar III	+2	Argon	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[40.735]	0.012	L8114
18	Ar IV	+3	Argon	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[59.58]	0.18	L11770
18	Ar V	+4	Argon	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[74.84]	0.17	L11770
18	Ar VI	+5	Argon	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	91.290	0.010	L12277
18	Ar VII	+6	Argon	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[124.41]	0.06	L11770
18	Ar VIII	+7	Argon	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[143.4567]	0.0012	L4344
18	Ar IX	+8	Argon	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[422.60]	0.06	L11770
18	Ar X	+9	Argon	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[479.76]	0.12	L11242c99
18	Ar XI	+10	Argon	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[540.4]	0.6	L11770
18	Ar XII	+11	Argon	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[619.0]	0.4	L11770
18	Ar XIII	+12	Argon	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[685.5]	0.3	L11770
18	Ar XIV	+13	Argon	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[755.13]	0.22	L11770
18	Ar XV	+14	Argon	Be	1s²2s²	¹S₀	2s ²S_1/2	[855.5]	0.3	L11770
18	Ar XVI	+15	Argon	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(918.375)	0.007	L16264c99
18	Ar XVII	+16	Argon	He	1s²	¹S₀	1s ²S_1/2	(4 120.6656)	0.0004	L12128
18	Ar XVIII	+17	Argon	H	1s	²S_¹/₂		(4 426.2228)	0.0007	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data K (all spectra) 19 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
19	K I	0	Potassium	K	[Ar]4s	²S_¹/₂	3p⁶ ¹S₀	4.34066369	0.00000009	L5451,L5783,L7185
19	K II	+1	Potassium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	31.62500	0.00019	L12188
19	K III	+2	Potassium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[45.8031]	0.0017	L11770
19	K IV	+3	Potassium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[60.917]	0.019	L11770
19	K V	+4	Potassium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[82.66]	0.16	L241
19	K VI	+5	Potassium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[99.44]	0.20	L7185
19	K VII	+6	Potassium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	117.56	0.11	L7185
19	K VIII	+7	Potassium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[154.87]	0.05	L12392
19	K IX	+8	Potassium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[175.8174]	0.0025	L4344
19	K X	+9	Potassium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[503.67]	0.07	L11770
19	K XI	+10	Potassium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[565.6]	0.7	L11770
19	K XII	+11	Potassium	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[631.1]	0.9	L11770
19	K XIII	+12	Potassium	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[714.7]	0.5	L11770
19	K XIV	+13	Potassium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[786.3]	0.3	L11770
19	K XV	+14	Potassium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[860.92]	0.25	L11770
19	K XVI	+15	Potassium	Be	1s²2s²	¹S₀	2s ²S_1/2	[967.7]	0.3	L11770
19	K XVII	+16	Potassium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(1 034.542)	0.007	L16264c99
19	K XVIII	+17	Potassium	He	1s²	¹S₀	1s ²S_1/2	(4 610.87014)	0.00013	L8473
19	K XIX	+18	Potassium	H	1s	²S_¹/₂		(4 934.0483)	0.0009	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Ca (all spectra) 20 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
20	Ca I	0	Calcium	Ca	[Ar]4s²	¹S₀	4s ²S_1/2	6.1131554	0.0000003	L8900
20	Ca II	+1	Calcium	K	[Ar]4s	²S_¹/₂	3p⁶ ¹S₀	11.871719	0.000004	L7185,L7323
20	Ca III	+2	Calcium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	50.91316	0.00025	L1405
20	Ca IV	+3	Calcium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[67.2732]	0.0021	L11770
20	Ca V	+4	Calcium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[84.34]	0.08	L11770
20	Ca VI	+5	Calcium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[108.78]	0.25	L7185
20	Ca VII	+6	Calcium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[127.21]	0.25	L7185
20	Ca VIII	+7	Calcium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	147.24	0.12	L7185
20	Ca IX	+8	Calcium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[188.54]	0.06	L7185
20	Ca X	+9	Calcium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[211.275]	0.004	L11770
20	Ca XI	+10	Calcium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[591.60]	0.12	L11770
20	Ca XII	+11	Calcium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[658.2]	0.9	L11770
20	Ca XIII	+12	Calcium	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[728.6]	1.1	L11770
20	Ca XIV	+13	Calcium	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[817.2]	0.6	L11770
20	Ca XV	+14	Calcium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[894.0]	0.4	L11770
20	Ca XVI	+15	Calcium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[973.7]	0.3	L11770
20	Ca XVII	+16	Calcium	Be	1s²2s²	¹S₀	2s ²S_1/2	[1 086.8]	0.4	L11770
20	Ca XVIII	+17	Calcium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(1 157.726)	0.007	L16264c99
20	Ca XIX	+18	Calcium	He	1s²	¹S₀	1s ²S_1/2	(5 128.8578)	0.0005	L12128
20	Ca XX	+19	Calcium	H	1s	²S_¹/₂		(5 469.8615)	0.0010	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Sc (all spectra) 21 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
21	Sc I	0	Scandium	Sc	[Ar]3d4s²	²D_³/₂	3d4s ³D₁	6.56149	0.00006	L7185,L2110
21	Sc II	+1	Scandium	Ca	[Ar]3d4s	³D₁	3d ²D_3/2	12.79977	0.00025	L7185,L5141
21	Sc III	+2	Scandium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	24.756838	0.000012	L1891,L7185
21	Sc IV	+3	Scandium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	73.4894	0.0004	L7185,L2826
21	Sc V	+4	Scandium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[91.95]	0.03	L11770
21	Sc VI	+5	Scandium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[110.68]	0.05	L7185
21	Sc VII	+6	Scandium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[137.99]	0.25	L7185
21	Sc VIII	+7	Scandium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[158.08]	0.25	L7185
21	Sc IX	+8	Scandium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	180.03	0.12	L7185
21	Sc X	+9	Scandium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[225.18]	0.05	L7185
21	Sc XI	+10	Scandium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[249.798]	0.005	L10106
21	Sc XII	+11	Scandium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	687.36	0.12	L7185
21	Sc XIII	+12	Scandium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[757.7]	1.0	L11770
21	Sc XIV	+13	Scandium	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[833.2]	1.4	L11770
21	Sc XV	+14	Scandium	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[926.5]	0.7	L11770
21	Sc XVI	+15	Scandium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[1 008.6]	0.4	L11770
21	Sc XVII	+16	Scandium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[1 093.5]	0.4	L11770
21	Sc XVIII	+17	Scandium	Be	1s²2s²	¹S₀	2s ²S_1/2	[1 213.1]	0.4	L11770
21	Sc XIX	+18	Scandium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(1 287.957)	0.007	L16264c99
21	Sc XX	+19	Scandium	He	1s²	¹S₀	1s ²S_1/2	(5 674.9036)	0.0006	L12128
21	Sc XXI	+20	Scandium	H	1s	²S_¹/₂		(6 033.7542)	0.0012	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Ti (all spectra) 22 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
22	Ti I	0	Titanium	Ti	[Ar]3d²4s²	³F₂	3d²4s ⁴F_3/2	6.828120	0.000012	L17996
22	Ti II	+1	Titanium	Sc	[Ar]3d²4s	⁴F_³/₂	3d² ³F₂	13.5755	0.0025	L7185,L5432
22	Ti III	+2	Titanium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	27.49171	0.00025	L7185,L3593
22	Ti IV	+3	Titanium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	43.26717	0.00019	L7185,L2753
22	Ti V	+4	Titanium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	99.299	0.012	L7185
22	Ti VI	+5	Titanium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[119.533]	0.025	L7185
22	Ti VII	+6	Titanium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[140.68]	0.18	L11770
22	Ti VIII	+7	Titanium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[170.5]	0.4	L11770
22	Ti IX	+8	Titanium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[192.1]	0.4	L7185
22	Ti X	+9	Titanium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	215.92	0.12	L7185
22	Ti XI	+10	Titanium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[265.07]	0.06	L7185
22	Ti XII	+11	Titanium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[291.500]	0.005	L11770
22	Ti XIII	+12	Titanium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	787.67	0.04	L11691
22	Ti XIV	+13	Titanium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[864.0]	1.2	L11770
22	Ti XV	+14	Titanium	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[944.5]	1.6	L11770
22	Ti XVI	+15	Titanium	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[1 042.5]	0.8	L11770
22	Ti XVII	+16	Titanium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[1 130.2]	0.5	L11770
22	Ti XVIII	+17	Titanium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[1 220.3]	0.5	L11770
22	Ti XIX	+18	Titanium	Be	1s²2s²	¹S₀	2s ²S_1/2	[1 346.3]	0.5	L11770
22	Ti XX	+19	Titanium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(1 425.257)	0.007	L16264c99
22	Ti XXI	+20	Titanium	He	1s²	¹S₀	1s ²S_1/2	(6 249.0225)	0.0006	L12128
22	Ti XXII	+21	Titanium	H	1s	²S_¹/₂		(6 625.8073)	0.0012	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data V (all spectra) 23 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
23	V I	0	Vanadium	V	[Ar]3d³4s²	⁴F_³/₂	3d⁴ ⁵D₀	6.746187	0.000021	L17712,L20010
23	V II	+1	Vanadium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	14.634	0.007	L20009
23	V III	+2	Vanadium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	29.3111	0.0025	L7185,L704,L4746
23	V IV	+3	Vanadium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	46.709	0.005	L7185,L147
23	V V	+4	Vanadium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	65.28165	0.00017	L3917,L7185
23	V VI	+5	Vanadium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	128.125	0.025	L7185
23	V VII	+6	Vanadium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[150.72]	0.13	L11770
23	V VIII	+7	Vanadium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[173.55]	0.21	L11770
23	V IX	+8	Vanadium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[206.0]	0.4	L11770
23	V X	+9	Vanadium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[230.5]	0.5	L7185
23	V XI	+10	Vanadium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[254.8]	0.4	L11770
23	V XII	+11	Vanadium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[308.5]	0.3	L11770
23	V XIII	+12	Vanadium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[336.274]	0.006	L11770
23	V XIV	+13	Vanadium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	896.0	0.4	L7185
23	V XV	+14	Vanadium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[977.2]	1.3	L11770
23	V XVI	+15	Vanadium	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[1 062.9]	2.0	L11770
23	V XVII	+16	Vanadium	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[1 165.2]	1.1	L11770
23	V XVIII	+17	Vanadium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[1 258.9]	0.6	L11770
23	V XIX	+18	Vanadium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[1 354.2]	0.5	L11770
23	V XX	+19	Vanadium	Be	1s²2s²	¹S₀	2s ²S_1/2	[1 486.7]	0.5	L11770
23	V XXI	+20	Vanadium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(1 569.656)	0.007	L16264c99
23	V XXII	+21	Vanadium	He	1s²	¹S₀	1s ²S_1/2	(6 851.3108)	0.0007	L12128
23	V XXIII	+22	Vanadium	H	1s	²S_¹/₂		(7 246.1225)	0.0012	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Cr (all spectra) 24 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
24	Cr I	0	Chromium	Cr	[Ar]3d⁵4s	⁷S₃	3d⁵ ⁶S_5/2	6.76651	0.00004	L7185,L2832
24	Cr II	+1	Chromium	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	16.486305	0.000015	L18847
24	Cr III	+2	Chromium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	30.959	0.025	L7185,L17500
24	Cr IV	+3	Chromium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	[49.16]	0.05	L7185,L5498
24	Cr V	+4	Chromium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	[69.46]	0.04	L1933,L7185
24	Cr VI	+5	Chromium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	90.6349	0.0007	L7185,L2229
24	Cr VII	+6	Chromium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[160.29]	0.06	L11770
24	Cr VIII	+7	Chromium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[184.76]	0.15	L11770
24	Cr IX	+8	Chromium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[209.5]	0.3	L11770
24	Cr X	+9	Chromium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[244.5]	0.5	L11770
24	Cr XI	+10	Chromium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[270.8]	0.5	L7185
24	Cr XII	+11	Chromium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[296.7]	0.6	L11770
24	Cr XIII	+12	Chromium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[354.7]	0.3	L11770
24	Cr XIV	+13	Chromium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[384.163]	0.006	L11770
24	Cr XV	+14	Chromium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[1 011.6]	0.5	L11770
24	Cr XVI	+15	Chromium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[1 097.2]	1.4	L11770
24	Cr XVII	+16	Chromium	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[1 188.0]	2.1	L11770c98
24	Cr XVIII	+17	Chromium	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[1 294.8]	1.6	L11770
24	Cr XIX	+18	Chromium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[1 394.5]	0.7	L11770
24	Cr XX	+19	Chromium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[1 495.1]	0.7	L11770
24	Cr XXI	+20	Chromium	Be	1s²2s²	¹S₀	2s ²S_1/2	[1 634.1]	0.5	L11770
24	Cr XXII	+21	Chromium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(1 721.183)	0.007	L16264c99
24	Cr XXIII	+22	Chromium	He	1s²	¹S₀	1s ²S_1/2	(7 481.8627)	0.0007	L12128
24	Cr XXIV	+23	Chromium	H	1s	²S_¹/₂		(7 894.7992)	0.0025	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Mn (all spectra) 25 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
25	Mn I	0	Manganese	Mn	[Ar]3d⁵4s²	⁶S_⁵/₂	3d⁵4s ⁷S₃	7.4340379	0.0000012	L19057
25	Mn II	+1	Manganese	Cr	[Ar]3d⁵4s	⁷S₃	3d⁵ ⁶S_5/2	15.63999	0.00007	L7185,L562
25	Mn III	+2	Manganese	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	33.668	0.012	L7185,L457
25	Mn IV	+3	Manganese	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	[51.21]	0.12	L7185,L241
25	Mn V	+4	Manganese	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	[72.41]	0.10	L7185,L241c99
25	Mn VI	+5	Manganese	Ca	[Ar]3d²	³F₂	3d ²D_3/2	95.604	0.025	L7185
25	Mn VII	+6	Manganese	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	119.203	0.012	L7185,L5223
25	Mn VIII	+7	Manganese	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[195.5]	0.3	L11770
25	Mn IX	+8	Manganese	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[221.89]	0.17	L11770
25	Mn X	+9	Manganese	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[248.6]	0.3	L11770
25	Mn XI	+10	Manganese	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[286.1]	0.5	L11770
25	Mn XII	+11	Manganese	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[314.4]	0.6	L7185
25	Mn XIII	+12	Manganese	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[343.6]	0.7	L7185
25	Mn XIV	+13	Manganese	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[402.95]	0.25	L7185
25	Mn XV	+14	Manganese	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[435.172]	0.007	L11770
25	Mn XVI	+15	Manganese	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[1 133.7]	0.6	L11770
25	Mn XVII	+16	Manganese	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[1 224.1]	1.5	L11770
25	Mn XVIII	+17	Manganese	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[1 320.3]	2.5	L11770
25	Mn XIX	+18	Manganese	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[1 430.9]	2.2	L11770
25	Mn XX	+19	Manganese	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[1 537.2]	0.8	L11770
25	Mn XXI	+20	Manganese	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[1 643.2]	0.7	L11770
25	Mn XXII	+21	Manganese	Be	1s²2s²	¹S₀	2s ²S_1/2	[1 788.7]	0.6	L11770
25	Mn XXIII	+22	Manganese	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(1 879.873)	0.007	L16264c99
25	Mn XXIV	+23	Manganese	He	1s²	¹S₀	1s ²S_1/2	(8 140.7872)	0.0010	L12128
25	Mn XXV	+24	Manganese	H	1s	²S_¹/₂		(8 571.9488)	0.0025	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Fe (all spectra) 26 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
26	Fe I	0	Iron	Fe	[Ar]3d⁶4s²	⁵D₄	3d⁶4s ⁶D_9/2	7.9024681	0.0000012	L7743c109
26	Fe II	+1	Iron	Mn	[Ar]3d⁶4s	⁶D_⁹/₂	3d⁶ ⁵D₄	16.19920	0.00005	L18349
26	Fe III	+2	Iron	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	30.651	0.012	L7185,L1171
26	Fe IV	+3	Iron	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	54.91	0.04	L17209
26	Fe V	+4	Iron	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	[75.00]	0.15	L7185,L241
26	Fe VI	+5	Iron	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	98.985	0.015	L17209
26	Fe VII	+6	Iron	Ca	[Ar]3d²	³F₂	3d ²D_3/2	124.976	0.012	L7185,L5267
26	Fe VIII	+7	Iron	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	151.060	0.012	L7185
26	Fe IX	+8	Iron	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[233.6]	0.4	L7185
26	Fe X	+9	Iron	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[262.10]	0.12	L7185
26	Fe XI	+10	Iron	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[290.9]	0.4	L11770
26	Fe XII	+11	Iron	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[330.8]	0.6	L11770
26	Fe XIII	+12	Iron	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[361.0]	0.7	L7185
26	Fe XIV	+13	Iron	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[392.2]	0.7	L7185
26	Fe XV	+14	Iron	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	456.2	0.5	L17943
26	Fe XVI	+15	Iron	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[489.312]	0.014	L11770
26	Fe XVII	+16	Iron	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[1 262.7]	0.7	L11770
26	Fe XVIII	+17	Iron	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[1 357.8]	1.9	L11770
26	Fe XIX	+18	Iron	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[1 460]	3	L11770
26	Fe XX	+19	Iron	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	1 575.6	0.5	L7185
26	Fe XXI	+20	Iron	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[1 687.0]	1.0	L11770
26	Fe XXII	+21	Iron	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[1 798.4]	0.8	L11770
26	Fe XXIII	+22	Iron	Be	1s²2s²	¹S₀	2s ²S_1/2	[1 950.4]	1.8	L11770
26	Fe XXIV	+23	Iron	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(2 045.759)	0.007	L16264c99
26	Fe XXV	+24	Iron	He	1s²	¹S₀	1s ²S_1/2	(8 828.1878)	0.0011	L12128
26	Fe XXVI	+25	Iron	H	1s	²S_¹/₂		(9 277.6817)	0.0025	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Co (all spectra) 27 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
27	Co I	0	Cobalt	Co	[Ar]3d⁷4s²	⁴F_⁹/₂	3d⁸ ³F₄	7.88101	0.00012	L10545
27	Co II	+1	Cobalt	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	17.0844	0.0012	L7185,L2115
27	Co III	+2	Cobalt	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	[33.50]	0.06	L7185,L17500
27	Co IV	+3	Cobalt	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	[51.27]	0.10	L7185,L241
27	Co V	+4	Cobalt	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	[79.50]	0.20	L7185,L241
27	Co VI	+5	Cobalt	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	[102.00]	0.20	L7185,L241
27	Co VII	+6	Cobalt	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	[128.9]	0.5	L7185,L241c99
27	Co VIII	+7	Cobalt	Ca	[Ar]3d²	³F₂	3d ²D_3/2	[157.8]	0.6	L7185
27	Co IX	+8	Cobalt	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	186.14	0.25	L7185
27	Co X	+9	Cobalt	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[275.4]	0.4	L7185
27	Co XI	+10	Cobalt	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[305.32]	0.23	L11770
27	Co XII	+11	Cobalt	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[336.1]	0.4	L11770
27	Co XIII	+12	Cobalt	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[378.5]	0.7	L11770
27	Co XIV	+13	Cobalt	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[410.0]	1.0	L11770
27	Co XV	+14	Cobalt	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[441.1]	1.4	L11770
27	Co XVI	+15	Cobalt	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[511.96]	0.06	L7185
27	Co XVII	+16	Cobalt	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[546.588]	0.015	L11770c98
27	Co XVIII	+17	Cobalt	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	1 397.2	0.5	L7185
27	Co XIX	+18	Cobalt	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	1 504.5	1.2	L7185
27	Co XX	+19	Cobalt	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[1 606]	4	L11770
27	Co XXI	+20	Cobalt	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[1 724]	3	L11770
27	Co XXII	+21	Cobalt	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[1 844.0]	1.1	L11770
27	Co XXIII	+22	Cobalt	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[1 960.8]	0.8	L11770
27	Co XXIV	+23	Cobalt	Be	1s²2s²	¹S₀	2s ²S_1/2	[2 119.4]	1.9	L11770
27	Co XXV	+24	Cobalt	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(2 218.876)	0.007	L16264c99
27	Co XXVI	+25	Cobalt	He	1s²	¹S₀	1s ²S_1/2	(9 544.1833)	0.0012	L12128
27	Co XXVII	+26	Cobalt	H	1s	²S_¹/₂		(10 012.122)	0.004	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Ni (all spectra) 28 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
28	Ni I	0	Nickel	Ni	[Ar]3d⁸4s²	³F₄	3d⁹ ²D_5/2	7.639878	0.000017	L12369
28	Ni II	+1	Nickel	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	18.168838	0.000025	L7185,L897
28	Ni III	+2	Nickel	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	35.187	0.019	L11049
28	Ni IV	+3	Nickel	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	[54.92]	0.25	L7185,L241
28	Ni V	+4	Nickel	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	[76.06]	0.06	L7185
28	Ni VI	+5	Nickel	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	[108.0]	1.0	L7185,L241c99
28	Ni VII	+6	Nickel	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(132.0)	2.0	L8672c99
28	Ni VIII	+7	Nickel	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(162.0)	2.1	L8672c99
28	Ni IX	+8	Nickel	Ca	[Ar]3d²	³F₂	3d ²D_3/2	[193.2]	0.5	L241c99
28	Ni X	+9	Nickel	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	[224.7]	0.5	L7185,L241c99
28	Ni XI	+10	Nickel	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[319.5]	0.7	L11770
28	Ni XII	+11	Nickel	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[351.6]	0.3	L11770
28	Ni XIII	+12	Nickel	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[384.5]	0.5	L11770
28	Ni XIV	+13	Nickel	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[429.3]	0.8	L11770
28	Ni XV	+14	Nickel	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[462.8]	1.1	L11770
28	Ni XVI	+15	Nickel	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[495.4]	1.7	L11770
28	Ni XVII	+16	Nickel	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[571.07]	0.12	L7185
28	Ni XVIII	+17	Nickel	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[607.020]	0.019	L11770
28	Ni XIX	+18	Nickel	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[1 541.0]	0.8	L11770
28	Ni XX	+19	Nickel	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[1 646]	3	L11770
28	Ni XXI	+20	Nickel	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[1 758]	4	L11770
28	Ni XXII	+21	Nickel	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[1 880]	5	L11770
28	Ni XXIII	+22	Nickel	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[2 008.1]	1.3	L11770
28	Ni XXIV	+23	Nickel	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[2 130.5]	0.9	L11770
28	Ni XXV	+24	Nickel	Be	1s²2s²	¹S₀	2s ²S_1/2	[2 295.6]	2.1	L11770
28	Ni XXVI	+25	Nickel	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(2 399.259)	0.007	L16264c99
28	Ni XXVII	+26	Nickel	He	1s²	¹S₀	1s ²S_1/2	(10 288.8861)	0.0014	L12128
28	Ni XXVIII	+27	Nickel	H	1s	²S_¹/₂		(10 775.386)	0.004	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Cu (all spectra) 29 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
29	Cu I	0	Copper	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	7.726380	0.000004	L14897
29	Cu II	+1	Copper	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	20.29239	0.00006	L869,L19804
29	Cu III	+2	Copper	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	36.841	0.012	L10559,L2987
29	Cu IV	+3	Copper	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	[57.38]	0.05	L10559,L5144
29	Cu V	+4	Copper	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	[79.8]	0.7	L10559,L241
29	Cu VI	+5	Copper	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	[103.0]	1.0	L10559,L241
29	Cu VII	+6	Copper	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	[139.0]	1.2	L10559,L241c99
29	Cu VIII	+7	Copper	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(166.0)	2.1	L8672c99
29	Cu IX	+8	Copper	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(198.0)	2.2	L8672c99
29	Cu X	+9	Copper	Ca	[Ar]3d²	³F₂	3d ²D_3/2	[232.2]	0.5	L241c99
29	Cu XI	+10	Copper	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	265.33	0.25	L10559
29	Cu XII	+11	Copper	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[367.0]	0.9	L11770
29	Cu XIII	+12	Copper	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[401.0]	0.3	L11770
29	Cu XIV	+13	Copper	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[436.0]	0.6	L11770
29	Cu XV	+14	Copper	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[483.1]	0.9	L11770
29	Cu XVI	+15	Copper	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[518.7]	1.2	L11770
29	Cu XVII	+16	Copper	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[552.8]	2.1	L11770
29	Cu XVIII	+17	Copper	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[632.5]	0.6	L11770
29	Cu XIX	+18	Copper	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[670.608]	0.020	L11770
29	Cu XX	+19	Copper	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[1 690.5]	0.9	L11770
29	Cu XXI	+20	Copper	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[1 800]	3	L11770
29	Cu XXII	+21	Copper	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[1 918]	4	L11770
29	Cu XXIII	+22	Copper	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[2 044]	6	L11770
29	Cu XXIV	+23	Copper	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[2 179.4]	1.5	L11770
29	Cu XXV	+24	Copper	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[2 307.3]	1.0	L11770
29	Cu XXVI	+25	Copper	Be	1s²2s²	¹S₀	2s ²S_1/2	[2 479.1]	2.2	L11770
29	Cu XXVII	+26	Copper	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(2 586.954)	0.007	L16264c99
29	Cu XXVIII	+27	Copper	He	1s²	¹S₀	1s ²S_1/2	(11 062.4312)	0.0016	L12128
29	Cu XXIX	+28	Copper	H	1s	²S_¹/₂		(11 567.613)	0.004	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Zn (all spectra) 30 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
30	Zn I	0	Zinc	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	9.394197	0.000006	L13951
30	Zn II	+1	Zinc	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	17.96439	0.00025	L9171,L640
30	Zn III	+2	Zinc	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	39.72330	0.00012	L9171,L65
30	Zn IV	+3	Zinc	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	59.573	0.019	L9171,L6389
30	Zn V	+4	Zinc	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	[82.6]	0.9	L9171,L241
30	Zn VI	+5	Zinc	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	[108.0]	1.0	L9171,L241
30	Zn VII	+6	Zinc	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	[133.9]	1.2	L9171,L241
30	Zn VIII	+7	Zinc	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	[173.9]	1.7	L9171,L241c99
30	Zn IX	+8	Zinc	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	[203.0]	2.0	L9171,L241
30	Zn X	+9	Zinc	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(238.0)	2.2	L8672c99
30	Zn XI	+10	Zinc	Ca	[Ar]3d²	³F₂	3d ²D_3/2	[274.4]	0.5	L241c99
30	Zn XII	+11	Zinc	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	[310.8]	1.0	L9171
30	Zn XIII	+12	Zinc	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[417.6]	1.2	L11770
30	Zn XIV	+13	Zinc	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[453.4]	0.3	L11770
30	Zn XV	+14	Zinc	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[490.6]	0.6	L11770
30	Zn XVI	+15	Zinc	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[540.0]	1.0	L11770
30	Zn XVII	+16	Zinc	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[577.8]	1.3	L11770
30	Zn XVIII	+17	Zinc	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[613.3]	2.4	L11770
30	Zn XIX	+18	Zinc	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[697.5]	0.7	L11770
30	Zn XX	+19	Zinc	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[737.366]	0.021	L11770
30	Zn XXI	+20	Zinc	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[1 846.8]	1.0	L11770
30	Zn XXII	+21	Zinc	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[1 961]	3	L11770
30	Zn XXIII	+22	Zinc	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[2 085]	5	L11770
30	Zn XXIV	+23	Zinc	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[2 214]	8	L11770
30	Zn XXV	+24	Zinc	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[2 358.0]	1.6	L11770
30	Zn XXVI	+25	Zinc	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[2 491.5]	1.1	L11770
30	Zn XXVII	+26	Zinc	Be	1s²2s²	¹S₀	2s ²S_1/2	[2 669.9]	2.5	L11770
30	Zn XXVIII	+27	Zinc	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(2 781.996)	0.007	L16264c99
30	Zn XXIX	+28	Zinc	He	1s²	¹S₀	1s ²S_1/2	(11 864.9398)	0.0019	L12128
30	Zn XXX	+29	Zinc	H	1s	²S_¹/₂		(12 388.929)	0.005	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Ga (all spectra) 31 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
31	Ga I	0	Gallium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	5.9993020	0.0000012	L5566
31	Ga II	+1	Gallium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	20.51514	0.00012	L6473
31	Ga III	+2	Gallium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	30.72576	0.00025	L6636
31	Ga IV	+3	Gallium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	63.241	0.009	L12180,L17779
31	Ga V	+4	Gallium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	[86.01]	0.12	L12180
31	Ga VI	+5	Gallium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(112.7)	1.1	L12180
31	Ga VII	+6	Gallium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(140.8)	1.4	L12180
31	Ga VIII	+7	Gallium	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(169.9)	1.7	L12180
31	Ga IX	+8	Gallium	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(211.0)	2.2	L8672c99
31	Ga X	+9	Gallium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(244.0)	2.5	L12180
31	Ga XI	+10	Gallium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(280.0)	2.4	L8672c99
31	Ga XII	+11	Gallium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(319.0)	2.5	L8672c99
31	Ga XIII	+12	Gallium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(356)	3	L8672c99
31	Ga XIV	+13	Gallium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[471.2]	1.4	L11770
31	Ga XV	+14	Gallium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[508.8]	0.4	L11770
31	Ga XVI	+15	Gallium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[548.3]	0.7	L11770
31	Ga XVII	+16	Gallium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[599.8]	1.4	L11770
31	Ga XVIII	+17	Gallium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[640.0]	1.5	L11770
31	Ga XIX	+18	Gallium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[677]	3	L11770
31	Ga XX	+19	Gallium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[765.7]	0.9	L11770
31	Ga XXI	+20	Gallium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[807.308]	0.025	L11770
31	Ga XXII	+21	Gallium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[2 010.0]	1.1	L11770
31	Ga XXIII	+22	Gallium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[2 129]	4	L11770
31	Ga XXIV	+23	Gallium	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[2 258]	5	L11770
31	Ga XXV	+24	Gallium	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[2 391]	18	L11770
31	Ga XXVI	+25	Gallium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[2 543.9]	2.0	L11770
31	Ga XXVII	+26	Gallium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[2 683.0]	1.4	L11770
31	Ga XXVIII	+27	Gallium	Be	1s²2s²	¹S₀	2s ²S_1/2	[2 868]	3	L11770
31	Ga XXIX	+28	Gallium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(2 984.426)	0.007	L16264c99
31	Ga XXX	+29	Gallium	He	1s²	¹S₀	1s ²S_1/2	(12 696.5573)	0.0021	L12128
31	Ga XXXI	+30	Gallium	H	1s	²S_¹/₂		(13 239.489)	0.006	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Ge (all spectra) 32 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
32	Ge I	0	Germanium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	7.899435	0.000012	L3935,L12369
32	Ge II	+1	Germanium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	15.934610	0.000025	L7213
32	Ge III	+2	Germanium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	34.0576	0.0012	L7213,L11268
32	Ge IV	+3	Germanium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	45.7155	0.0012	L7213,L6924
32	Ge V	+4	Germanium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	90.500	0.019	L7213,L17779
32	Ge VI	+5	Germanium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	[115.90]	0.12	L7213
32	Ge VII	+6	Germanium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(144.9)	1.5	L7213
32	Ge VIII	+7	Germanium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(176.4)	1.7	L7213
32	Ge IX	+8	Germanium	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(212.5)	2.1	L7213
32	Ge X	+9	Germanium	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(252.1)	2.2	L8672c99
32	Ge XI	+10	Germanium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(286)	3	L7213
32	Ge XII	+11	Germanium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(326.0)	2.5	L8672c99
32	Ge XIII	+12	Germanium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(367)	3	L8672c99
32	Ge XIV	+13	Germanium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(407)	3	L8672c99
32	Ge XV	+14	Germanium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[527.9]	1.6	L11770
32	Ge XVI	+15	Germanium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[567.3]	0.5	L11770
32	Ge XVII	+16	Germanium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[609.1]	0.8	L11770
32	Ge XVIII	+17	Germanium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[662.8]	1.9	L11770
32	Ge XIX	+18	Germanium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[706.7]	1.0	L7213
32	Ge XX	+19	Germanium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[744]	3	L11770
32	Ge XXI	+20	Germanium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[837.1]	1.0	L11770
32	Ge XXII	+21	Germanium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[880.44]	0.03	L11770
32	Ge XXIII	+22	Germanium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[2 180.1]	1.2	L11770
32	Ge XXIV	+23	Germanium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[2 304]	4	L11770
32	Ge XXV	+24	Germanium	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[2 439]	5	L11770
32	Ge XXVI	+25	Germanium	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[2 575]	19	L11770
32	Ge XXVII	+26	Germanium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[2 737.1]	2.3	L11770
32	Ge XXVIII	+27	Germanium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[2 881.9]	1.6	L11770
32	Ge XXIX	+28	Germanium	Be	1s²2s²	¹S₀	2s ²S_1/2	[3 074]	3	L11770
32	Ge XXX	+29	Germanium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(3 194.293)	0.007	L16264c99
32	Ge XXXI	+30	Germanium	He	1s²	¹S₀	1s ²S_1/2	(13 557.4207)	0.0024	L12128
32	Ge XXXII	+31	Germanium	H	1s	²S_¹/₂		(14 119.430)	0.006	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data As (all spectra) 33 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
33	As I	0	Arsenic	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	9.78855	0.00025	L1351
33	As II	+1	Arsenic	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	18.5892	0.0010	L820
33	As III	+2	Arsenic	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	28.349	0.012	L9358
33	As IV	+3	Arsenic	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	50.15	0.06	L9358
33	As V	+4	Arsenic	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	62.77	0.06	L5339
33	As VI	+5	Arsenic	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	121.19	0.06	L11275
33	As VII	+6	Arsenic	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(147.0)	2.0	L8672c99
33	As VIII	+7	Arsenic	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(180.0)	2.1	L8672c99
33	As IX	+8	Arsenic	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(213.0)	2.2	L8672c99
33	As X	+9	Arsenic	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(247.0)	2.2	L8672c99
33	As XI	+10	Arsenic	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(296.0)	2.4	L8672c99
33	As XII	+11	Arsenic	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(333.0)	2.5	L8672c99
33	As XIII	+12	Arsenic	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(375)	3	L8672c99
33	As XIV	+13	Arsenic	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(418)	3	L8672c99
33	As XV	+14	Arsenic	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(460)	3	L8672c99
33	As XVI	+15	Arsenic	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[587.6]	1.9	L11770
33	As XVII	+16	Arsenic	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[628.8]	0.6	L11770
33	As XVIII	+17	Arsenic	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[672.9]	0.9	L11770
33	As XIX	+18	Arsenic	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[728.9]	2.2	L11770
33	As XX	+19	Arsenic	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[774.0]	1.8	L11770
33	As XXI	+20	Arsenic	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[814]	4	L11770
33	As XXII	+21	Arsenic	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[911.7]	1.1	L11770
33	As XXIII	+22	Arsenic	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[956.79]	0.03	L11770
33	As XXIV	+23	Arsenic	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[2 356.9]	1.4	L11770
33	As XXV	+24	Arsenic	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[2 486]	4	L11770
33	As XXVI	+25	Arsenic	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[2 626]	6	L11770
33	As XXVII	+26	Arsenic	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[2 766]	21	L11770
33	As XXVIII	+27	Arsenic	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[2 938]	3	L11770
33	As XXIX	+28	Arsenic	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[3 088.1]	1.9	L11770
33	As XXX	+29	Arsenic	Be	1s²2s²	¹S₀	2s ²S_1/2	[3 287]	3	L11770
33	As XXXI	+30	Arsenic	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(3 411.643)	0.007	L16264c99
33	As XXXII	+31	Arsenic	He	1s²	¹S₀	1s ²S_1/2	(14 447.678)	0.003	L12128
33	As XXXIII	+32	Arsenic	H	1s	²S_¹/₂		(15 028.907)	0.006	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Se (all spectra) 34 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

NIST Atomic Ionization Energies Output

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
34	Se I	0	Selenium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	9.752392	0.000015	L2647,L4168,L5688
34	Se II	+1	Selenium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	21.196	0.010	L17234c100
34	Se III	+2	Selenium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	31.697	0.019	L17867
34	Se IV	+3	Selenium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	42.947	0.003	L925
34	Se V	+4	Selenium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	[68.30]	0.10	L16139

NIST Atomic Spectra Database Ionization Energies Data Br (all spectra) 35 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

NIST Atomic Ionization Energies Output

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty^b (eV)	References
35	Br I	0	Bromine	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	11.81381	0.00006	L351,L67
35	Br II	+1	Bromine	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	21.591		L8844
35	Br III	+2	Bromine	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	34.871	0.019	L19007
35	Br IV	+3	Bromine	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	47.782	0.012	L18581
35	Br V	+4	Bromine	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	59.595	0.025	L14906
35	Br VI	+5	Bromine	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	87.390	0.025	L18281
35	Br VII	+6	Bromine	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[103.03]	0.19	L10278
35	Br VIII	+7	Bromine	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	192.61	0.06	L6586
35	Br IX	+8	Bromine	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(224.0)	2.2	L8672c99
35	Br X	+9	Bromine	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(261.0)	2.2	L8672c99
35	Br XI	+10	Bromine	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(301.0)	2.4	L8672c99
35	Br XII	+11	Bromine	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(338.0)	2.5	L8672c99
35	Br XIII	+12	Bromine	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(393)	3	L8672c99
35	Br XIV	+13	Bromine	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(436)	3	L8672c99
35	Br XV	+14	Bromine	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(481)	3	L8672c99
35	Br XVI	+15	Bromine	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(530)	3	L8672c99
35	Br XVII	+16	Bromine	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(577)	3	L8672c99
35	Br XVIII	+17	Bromine	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[716.3]	2.3	L11770
35	Br XIX	+18	Bromine	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[761.0]	0.8	L11770

NIST Atomic Spectra Database Ionization Energies Data Kr (all spectra) 36 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
36	Kr I	0	Krypton	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	13.9996053	0.0000020	L12196
36	Kr II	+1	Krypton	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	24.35984	0.00012	L7212,L353
36	Kr III	+2	Krypton	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	35.838	0.020	L15467
36	Kr IV	+3	Krypton	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	50.85	0.11	L9022c101
36	Kr V	+4	Krypton	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	[64.69]	0.20	L12196,L16139
36	Kr VI	+5	Krypton	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	[78.49]	0.20	L12196,L16139
36	Kr VII	+6	Krypton	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(109.13)	0.05	L13202
36	Kr VIII	+7	Krypton	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	125.802	0.003	L10636
36	Kr IX	+8	Krypton	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	[233.0]	0.7	L10191
36	Kr X	+9	Krypton	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(268)	3	L7212
36	Kr XI	+10	Krypton	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(308)	3	L7212
36	Kr XII	+11	Krypton	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(350)	3	L7212
36	Kr XIII	+12	Krypton	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(391)	4	L7212
36	Kr XIV	+13	Krypton	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(446)	3	L8672c99
36	Kr XV	+14	Krypton	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(492)	5	L12196
36	Kr XVI	+15	Krypton	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(540)	3	L8672c99
36	Kr XVII	+16	Krypton	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(591)	3	L8672c99
36	Kr XVIII	+17	Krypton	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(640)	3	L8672c99
36	Kr XIX	+18	Krypton	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[785]	3	L11770
36	Kr XX	+19	Krypton	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[831.6]	0.9	L11770
36	Kr XXI	+20	Krypton	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[882.8]	1.3	L11770
36	Kr XXII	+21	Krypton	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[945]	3	L11770
36	Kr XXIII	+22	Krypton	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[999.0]	2.4	L11770
36	Kr XXIV	+23	Krypton	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[1 042]	5	L11770
36	Kr XXV	+24	Krypton	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[1 155.0]	1.6	L11770
36	Kr XXVI	+25	Krypton	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[1 205.23]	0.04	L11770
36	Kr XXVII	+26	Krypton	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[2 928.9]	1.7	L11770
36	Kr XXVIII	+27	Krypton	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[3 072]	5	L11770
36	Kr XXIX	+28	Krypton	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[3 228]	7	L11770
36	Kr XXX	+29	Krypton	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[3 380]	30	L11770
36	Kr XXXI	+30	Krypton	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[3 584]	4	L11770
36	Kr XXXII	+31	Krypton	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[3 752.0]	2.5	L11770
36	Kr XXXIII	+32	Krypton	Be	1s²2s²	¹S₀	2s ²S_1/2	[3 971]	4	L11770
36	Kr XXXIV	+33	Krypton	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(4 109.083)	0.009	L16264c99
36	Kr XXXV	+34	Krypton	He	1s²	¹S₀	1s ²S_1/2	(17 296.420)	0.004	L12128
36	Kr XXXVI	+35	Krypton	H	1s	²S_¹/₂		(17 936.209)	0.011	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Rb (all spectra) 37 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
37	Rb I	0	Rubidium	Rb	[Kr]5s	²S_¹/₂	4p⁶ ¹S₀	4.1771280	0.0000012	L4740,L5783
37	Rb II	+1	Rubidium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	27.28954	0.00006	L2590
37	Rb III	+2	Rubidium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	[39.247]	0.003	L4311
37	Rb IV	+3	Rubidium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	[52.20]	0.25	L9039,L6470
37	Rb V	+4	Rubidium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(68.44)	0.15	L9039c99
37	Rb VI	+5	Rubidium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(82.9)	2.0	L8672c99
37	Rb VII	+6	Rubidium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	[98.67]	0.04	L6833
37	Rb VIII	+7	Rubidium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	[132.79]	0.25	L9039,L6976
37	Rb IX	+8	Rubidium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	150.628	0.025	L6264
37	Rb X	+9	Rubidium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	277.12	0.12	L3465c99
37	Rb XI	+10	Rubidium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(313.1)	2.4	L8672c99
37	Rb XII	+11	Rubidium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(356.0)	2.5	L8672c99
37	Rb XIII	+12	Rubidium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(400)	3	L8672c99
37	Rb XIV	+13	Rubidium	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(443)	3	L8672c99
37	Rb XV	+14	Rubidium	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(502)	3	L8672c99
37	Rb XVI	+15	Rubidium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(550)	3	L8672c99
37	Rb XVII	+16	Rubidium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(601)	3	L8672c99
37	Rb XVIII	+17	Rubidium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(654)	3	L8672c99
37	Rb XIX	+18	Rubidium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(706.0)	2.2	L9039
37	Rb XX	+19	Rubidium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[857]	3	L11770
37	Rb XXI	+20	Rubidium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[905.3]	1.0	L11770
37	Rb XXII	+21	Rubidium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[958.9]	1.4	L11770
37	Rb XXIII	+22	Rubidium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[1 024]	4	L11770
37	Rb XXIV	+23	Rubidium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[1 080]	3	L11770
37	Rb XXV	+24	Rubidium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[1 125]	5	L11770
37	Rb XXVI	+25	Rubidium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[1 242.5]	1.7	L11770
37	Rb XXVII	+26	Rubidium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[1 294.57]	0.04	L11770
37	Rb XXVIII	+27	Rubidium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[3 133.3]	1.8	L11770
37	Rb XXIX	+28	Rubidium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[3 281]	6	L11770
37	Rb XXX	+29	Rubidium	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[3 443]	8	L11770
37	Rb XXXI	+30	Rubidium	N	1s²2s²2p³	⁴S°_³/₂	2p² ³P₀	[3 600]	30	L11770
37	Rb XXXII	+31	Rubidium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[3 815]	4	L11770
37	Rb XXXIII	+32	Rubidium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[3 988]	3	L11770
37	Rb XXXIV	+33	Rubidium	Be	1s²2s²	¹S₀	2s ²S_1/2	[4 214]	4	L11770
37	Rb XXXV	+34	Rubidium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(4 356.865)	0.010	L16264c99
37	Rb XXXVI	+35	Rubidium	He	1s²	¹S₀	1s ²S_1/2	(18 305.884)	0.005	L12128
37	Rb XXXVII	+36	Rubidium	H	1s	²S_¹/₂		(18 965.516)	0.012	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶
[Kr] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Sr (all spectra) 38 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
38	Sr I	0	Strontium	Sr	[Kr]5s²	¹S₀	5s ²S_1/2	5.69486740	0.00000013	L15350,L5644
38	Sr II	+1	Strontium	Rb	[Kr]5s	²S_¹/₂	4p⁶ ¹S₀	11.0302764	0.0000025	L13983
38	Sr III	+2	Strontium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	42.88353	0.00019	L1771
38	Sr IV	+3	Strontium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4s²4p⁴ ³P₂	[56.280]	0.003	L4311
38	Sr V	+4	Strontium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4s²4p³ ⁴S°_3/2	[70.7]	0.6	L6378
38	Sr VI	+5	Strontium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4s²4p² ²P₀	(88.0)	2.0	L8672c99
38	Sr VII	+6	Strontium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4s²4p ²P°_1/2	(104.0)	2.0	L8672c99
38	Sr VIII	+7	Strontium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	[121.21]	0.06	L6833
38	Sr IX	+8	Strontium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	[158.33]	0.25	L6976
38	Sr X	+9	Strontium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	177.30	0.06	L5322
38	Sr XI	+10	Strontium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	324.07	0.15	L3465c99
38	Sr XII	+11	Strontium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(362.0)	2.5	L8672c99
38	Sr XIII	+12	Strontium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(408)	3	L8672c99
38	Sr XIV	+13	Strontium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(454)	3	L8672c99
38	Sr XV	+14	Strontium	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(499)	3	L8672c99
38	Sr XVI	+15	Strontium	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(562)	3	L8672c99
38	Sr XVII	+16	Strontium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(612)	3	L8672c99
38	Sr XVIII	+17	Strontium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(665)	3	L8672c99
38	Sr XIX	+18	Strontium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(722)	3	L8672c99
38	Sr XX	+19	Strontium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(774)	4	L8672c99
38	Sr XXI	+20	Strontium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[932]	3	L11770
38	Sr XXII	+21	Strontium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[982.1]	1.1	L11770
38	Sr XXIII	+22	Strontium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[1 038.0]	1.5	L11770
38	Sr XXIV	+23	Strontium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[1 105]	4	L11770
38	Sr XXV	+24	Strontium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[1 165]	3	L11770
38	Sr XXVI	+25	Strontium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[1 211]	6	L11770
38	Sr XXVII	+26	Strontium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[1 333.4]	1.9	L11770
38	Sr XXVIII	+27	Strontium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[1 387.19]	0.05	L11770
38	Sr XXIX	+28	Strontium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[3 344.7]	1.9	L11770
38	Sr XXX	+29	Strontium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[3 497]	6	L11770
38	Sr XXXI	+30	Strontium	O	1s²2s²2p⁴	³P₂	2p³ ⁴S°_3/2	[3 664]	8	L11770
38	Sr XXXII	+31	Strontium	N	1s²2s²2p³	⁴S°_³/₂	2s²2p² ³P₀	[3 830]	30	L11770
38	Sr XXXIII	+32	Strontium	C	1s²2s²2p²	³P₀	2s²2p ²P°_1/2	[4 053]	4	L11770
38	Sr XXXIV	+33	Strontium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[4 232]	3	L11770
38	Sr XXXV	+34	Strontium	Be	1s²2s²	¹S₀	2s ²S_1/2	[4 465]	4	L11770
38	Sr XXXVI	+35	Strontium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(4 612.397)	0.011	L16264c99
38	Sr XXXVII	+36	Strontium	He	1s²	¹S₀	1s ²S_1/2	(19 345.588)	0.005	L12128
38	Sr XXXVIII	+37	Strontium	H	1s	²S_¹/₂		(20 025.233)	0.012	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶
[Kr] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Y (all spectra) 39 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
39	Y I	0	Yttrium	Y	[Kr]4d5s²	²D_³/₂	5s² ¹S₀	6.21726	0.00010	L8844,L2111,L9735
39	Y II	+1	Yttrium	Sr	[Kr]5s²	¹S₀	4d ²D_3/2	12.2236	0.0006	L10987
39	Y III	+2	Yttrium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	20.52441	0.00012	L2592
39	Y IV	+3	Yttrium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	[60.6072]	0.0025	L5501
39	Y V	+4	Yttrium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	75.35	0.04	L19755
39	Y VI	+5	Yttrium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	[91.390]	0.025	L6821
39	Y VII	+6	Yttrium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	[110.02]	0.15	L5287
39	Y VIII	+7	Yttrium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(127.0)	2.1	L8672c99
39	Y IX	+8	Yttrium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	[145.64]	0.04	L6833
39	Y X	+9	Yttrium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	[185.7]	0.4	L6976
39	Y XI	+10	Yttrium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	205.814	0.025	L4899
39	Y XII	+11	Yttrium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	374.04	0.25	L3465c99
39	Y XIII	+12	Yttrium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(414)	3	L8672c99
39	Y XIV	+13	Yttrium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(463)	3	L8672c99
39	Y XV	+14	Yttrium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(512)	3	L8672c99
39	Y XVI	+15	Yttrium	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(559)	3	L8672c99
39	Y XVII	+16	Yttrium	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(624)	3	L8672c99
39	Y XVIII	+17	Yttrium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(677)	3	L8672c99
39	Y XIX	+18	Yttrium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(733)	3	L8672c99
39	Y XX	+19	Yttrium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(790)	4	L8672c99
39	Y XXI	+20	Yttrium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(847)	4	L8672c99
39	Y XXII	+21	Yttrium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[1 010]	3	L11770
39	Y XXIII	+22	Yttrium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[1 061.9]	1.2	L11770
39	Y XXIV	+23	Yttrium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[1 120.2]	1.6	L11770
39	Y XXV	+24	Yttrium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[1 190]	4	L11770
39	Y XXVI	+25	Yttrium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[1 253]	3	L11770
39	Y XXVII	+26	Yttrium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[1 300]	6	L11770
39	Y XXVIII	+27	Yttrium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[1 427.6]	2.0	L11770
39	Y XXIX	+28	Yttrium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[1 483.12]	0.05	L11770
39	Y XXX	+29	Yttrium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[3 562.9]	2.0	L11770
39	Y XXXI	+30	Yttrium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[3 720]	6	L11770
39	Y XXXII	+31	Yttrium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	[3 892]	8	L11770
39	Y XXXIII	+32	Yttrium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	[4 060]	30	L11770
39	Y XXXIV	+33	Yttrium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[4 299]	5	L11770
39	Y XXXV	+34	Yttrium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[4 484]	3	L11770
39	Y XXXVI	+35	Yttrium	Be	1s²2s²	¹S₀	2s ²S_1/2	[4 724]	5	L11770
39	Y XXXVII	+36	Yttrium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(4 875.731)	0.012	L16264c99
39	Y XXXVIII	+37	Yttrium	He	1s²	¹S₀	1s ²S_1/2	(20 415.717)	0.006	L12128
39	Y XXXIX	+38	Yttrium	H	1s	²S_¹/₂		(21 115.550)	0.012	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶
[Kr] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Zr (all spectra) 40 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty^b (eV)	References
40	Zr I	0	Zirconium	Zr	[Kr]4d²5s²	³F₂	4d²5s ⁴F_3/2	6.63412	0.00006	L20101
40	Zr II	+1	Zirconium	Y	[Kr]4d²5s	⁴F_³/₂	4d² ³F₂	13.13		L272
40	Zr III	+2	Zirconium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	[23.170]	0.004	L9267
40	Zr IV	+3	Zirconium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	34.41836	0.00006	L11645
40	Zr V	+4	Zirconium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	[80.348]	0.007	L4594
40	Zr VI	+5	Zirconium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	[96.38]	0.04	L19460
40	Zr VII	+6	Zirconium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(112.0)	2.0	L8672c99
40	Zr VIII	+7	Zirconium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	[133.7]	0.5	L5287
40	Zr IX	+8	Zirconium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(153.0)	2.2	L8672c99
40	Zr X	+9	Zirconium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	[172.02]	0.05	L6833
40	Zr XI	+10	Zirconium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	[214.9]	0.4	L6976
40	Zr XII	+11	Zirconium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	236.252	0.025	L4917
40	Zr XIII	+12	Zirconium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(426)	3	L8672c99
40	Zr XIV	+13	Zirconium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(470)	3	L8672c99
40	Zr XV	+14	Zirconium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(520)	3	L8672c99
40	Zr XVI	+15	Zirconium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(573)	3	L8672c99
40	Zr XVII	+16	Zirconium	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(622)	3	L8672c99
40	Zr XVIII	+17	Zirconium	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(690)	3	L8672c99
40	Zr XIX	+18	Zirconium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(745)	3	L8672c99
40	Zr XX	+19	Zirconium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(803)	4	L8672c99
40	Zr XXI	+20	Zirconium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(863)	4	L8672c99
40	Zr XXII	+21	Zirconium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(922)	4	L8672c99
40	Zr XXIII	+22	Zirconium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[1 092]	3	L11770
40	Zr XXIV	+23	Zirconium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[1 144.7]	1.2	L11770
40	Zr XXV	+24	Zirconium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[1 205.4]	1.7	L11770
40	Zr XXVI	+25	Zirconium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[1 277]	5	L11770
40	Zr XXVII	+26	Zirconium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[1 344]	3	L11770
40	Zr XXVIII	+27	Zirconium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[1 392]	7	L11770
40	Zr XXIX	+28	Zirconium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[1 525.1]	2.2	L11770
40	Zr XXX	+29	Zirconium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[1 582.37]	0.05	L11770
40	Zr XXXI	+30	Zirconium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[3 788.0]	2.1	L11770
40	Zr XXXII	+31	Zirconium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[3 950]	7	L11770
40	Zr XXXIII	+32	Zirconium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	[4 127]	9	L11770
40	Zr XXXIV	+33	Zirconium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	[4 300]	30	L11770
40	Zr XXXV	+34	Zirconium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[4 553]	5	L11770
40	Zr XXXVI	+35	Zirconium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[4 744]	3	L11770
40	Zr XXXVII	+36	Zirconium	Be	1s²2s²	¹S₀	2s ²S_1/2	[4 991]	5	L11770
40	Zr XXXVIII	+37	Zirconium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(5 146.935)	0.014	L16264c99
40	Zr XXXIX	+38	Zirconium	He	1s²	¹S₀	1s ²S_1/2	(21 516.469)	0.006	L12128
40	Zr XL	+39	Zirconium	H	1s	²S_¹/₂		(22 236.677)	0.012	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶
[Kr] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶
^bUncertainties of some of the listed values are unknown.

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Nb (all spectra) 41 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty^b (eV)	References
41	Nb I	0	Niobium	Nb	[Kr]4d⁴5s	⁶D_¹/₂	4d⁴ ⁵D₀	6.75885	0.00004	L6829
41	Nb II	+1	Niobium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	[14.32]		L3466
41	Nb III	+2	Niobium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	[25.04]		L17276
41	Nb IV	+3	Niobium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	37.611	0.022	L12094
41	Nb V	+4	Niobium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	50.5728	0.0025	L5437
41	Nb VI	+5	Niobium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	[102.069]	0.006	L11271
41	Nb VII	+6	Niobium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	119.1	0.4	L2933
41	Nb VIII	+7	Niobium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(136.0)	2.1	L8672c99
41	Nb IX	+8	Niobium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	[159.2]	0.7	L5287
41	Nb X	+9	Niobium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(180.0)	2.2	L8672c99
41	Nb XI	+10	Niobium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	[200.28]	0.06	L6833
41	Nb XII	+11	Niobium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	[246.1]	0.4	L6976
41	Nb XIII	+12	Niobium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	268.59	0.04	L4998
41	Nb XIV	+13	Niobium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	[482.5]	1.5	L10191
41	Nb XV	+14	Niobium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(530)	3	L8672c99
41	Nb XVI	+15	Niobium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(581)	3	L8672c99
41	Nb XVII	+16	Niobium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(636)	3	L8672c99
41	Nb XVIII	+17	Niobium	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(688)	3	L8672c99
41	Nb XIX	+18	Niobium	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(758)	3	L8672c99
41	Nb XX	+19	Niobium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(816)	4	L8672c99
41	Nb XXI	+20	Niobium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(877)	4	L8672c99
41	Nb XXII	+21	Niobium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(940)	4	L8672c99
41	Nb XXIII	+22	Niobium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(1 000)	4	L8672c99
41	Nb XXIV	+23	Niobium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[1 176]	4	L11770
41	Nb XXV	+24	Niobium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[1 230.6]	1.3	L11770
41	Nb XXVI	+25	Niobium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[1 293.7]	1.8	L11770
41	Nb XXVII	+26	Niobium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[1 368]	5	L11770
41	Nb XXVIII	+27	Niobium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[1 439]	3	L11770
41	Nb XXIX	+28	Niobium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[1 488]	7	L11770
41	Nb XXX	+29	Niobium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[1 625.9]	2.3	L11770
41	Nb XXXI	+30	Niobium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[1 684.97]	0.05	L11770
41	Nb XXXII	+31	Niobium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[4 020.1]	2.2	L11770
41	Nb XXXIII	+32	Niobium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[4 187]	7	L11770
41	Nb XXXIV	+33	Niobium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	[4 369]	9	L11770
41	Nb XXXV	+34	Niobium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	[4 540]	30	L11770
41	Nb XXXVI	+35	Niobium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[4 815]	5	L11770
41	Nb XXXVII	+36	Niobium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[5 011]	4	L11770
41	Nb XXXVIII	+37	Niobium	Be	1s²2s²	¹S₀	2s ²S_1/2	[5 265]	5	L11770
41	Nb XXXIX	+38	Niobium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(5 426.065)	0.015	L16264c99
41	Nb XL	+39	Niobium	He	1s²	¹S₀	1s ²S_1/2	(22 648.046)	0.006	L12128
41	Nb XLI	+40	Niobium	H	1s	²S_¹/₂		(23 388.801)	0.012	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Mo (all spectra) 42 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
42	Mo I	0	Molybdenum	Mo	[Kr]4d⁵5s	⁷S₃	4d⁵ ⁶S_5/2	7.09243	0.00004	L6829
42	Mo II	+1	Molybdenum	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	[16.16]	0.12	L10502,L17501
42	Mo III	+2	Molybdenum	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	[27.13]	0.12	L10502,L17276
42	Mo IV	+3	Molybdenum	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	[40.33]	0.06	L10804,L10371
42	Mo V	+4	Molybdenum	Sr	[Kr]4d²	³F₂	4d ²D_3/2	[54.417]	0.019	L19131
42	Mo VI	+5	Molybdenum	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	68.82704	0.00021	L15083
42	Mo VII	+6	Molybdenum	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	[125.638]	0.025	L10359
42	Mo VIII	+7	Molybdenum	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	143.6	1.0	L10502,L3646
42	Mo IX	+8	Molybdenum	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	164.12	0.09	L10502,L4577
42	Mo X	+9	Molybdenum	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	[186.3]	1.2	L10502,L5287
42	Mo XI	+10	Molybdenum	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(209.3)	1.2	L10502
42	Mo XII	+11	Molybdenum	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	[230.28]	0.06	L10502,L6833
42	Mo XIII	+12	Molybdenum	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	[279.1]	0.5	L10502,L6976
42	Mo XIV	+13	Molybdenum	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	302.60	0.04	L4593
42	Mo XV	+14	Molybdenum	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	[544.0]	0.5	L10502
42	Mo XVI	+15	Molybdenum	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(591)	3	L8672c99
42	Mo XVII	+16	Molybdenum	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(646)	3	L8672c99
42	Mo XVIII	+17	Molybdenum	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(702)	3	L8672c99
42	Mo XIX	+18	Molybdenum	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(758)	3	L8672c99
42	Mo XX	+19	Molybdenum	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(829)	4	L8672c99
42	Mo XXI	+20	Molybdenum	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(890)	4	L8672c99
42	Mo XXII	+21	Molybdenum	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(953)	4	L8672c99
42	Mo XXIII	+22	Molybdenum	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(1 019)	4	L8672c99
42	Mo XXIV	+23	Molybdenum	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(1 082)	4	L8672c99
42	Mo XXV	+24	Molybdenum	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[1 263]	4	L11770
42	Mo XXVI	+25	Molybdenum	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[1 319.6]	1.4	L11770
42	Mo XXVII	+26	Molybdenum	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[1 385.1]	1.9	L11770
42	Mo XXVIII	+27	Molybdenum	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[1 462]	6	L11770
42	Mo XXIX	+28	Molybdenum	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[1 537]	3	L11770
42	Mo XXX	+29	Molybdenum	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[1 587]	8	L11770
42	Mo XXXI	+30	Molybdenum	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[1 730.1]	2.5	L11770
42	Mo XXXII	+31	Molybdenum	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[1 790.93]	0.06	L11770
42	Mo XXXIII	+32	Molybdenum	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[4 259.0]	2.4	L11770
42	Mo XXXIV	+33	Molybdenum	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[4 430]	7	L11770
42	Mo XXXV	+34	Molybdenum	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	[4 618]	10	L11770
42	Mo XXXVI	+35	Molybdenum	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	[4 800]	30	L11770
42	Mo XXXVII	+36	Molybdenum	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[5 084]	6	L11770
42	Mo XXXVIII	+37	Molybdenum	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[5 287]	4	L11770
42	Mo XXXIX	+38	Molybdenum	Be	1s²2s²	¹S₀	2s ²S_1/2	[5 548]	5	L11770
42	Mo XL	+39	Molybdenum	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(5 713.194)	0.016	L16264c99
42	Mo XLI	+40	Molybdenum	He	1s²	¹S₀	1s ²S_1/2	(23 810.654)	0.006	L12128
42	Mo XLII	+41	Molybdenum	H	1s	²S_¹/₂		(24 572.155)	0.025	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶
[Kr] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Tc (all spectra) 43 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty^b (eV)	References
43	Tc I	0	Technetium	Tc	[Kr]4d⁵5s²	⁶S_⁵/₂	4d⁵5s ⁷S₃	7.11938	0.00003	L15237
43	Tc II	+1	Technetium	Mo	[Kr]4d⁵5s	⁷S₃	4d⁵ ⁶S_5/2	[15.26]		L3466,L17503
43	Tc III	+2	Technetium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	[29.55]		L17276
43	Tc IV	+3	Technetium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(41.0)	1.7	L8672c99
43	Tc V	+4	Technetium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(57.0)	1.9	L8672c99
43	Tc VI	+5	Technetium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(72.0)	2.0	L8672c99
43	Tc VII	+6	Technetium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(88.0)	2.0	L8672c99
43	Tc VIII	+7	Technetium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(150.0)	2.1	L8672c99
43	Tc IX	+8	Technetium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(169.0)	2.2	L8672c99
43	Tc X	+9	Technetium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(189.9)	2.2	L8672c99
43	Tc XI	+10	Technetium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(214.0)	2.4	L8672c99
43	Tc XII	+11	Technetium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(239.0)	2.5	L8672c99
43	Tc XIII	+12	Technetium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	[262.08]	0.12	L6833
43	Tc XIV	+13	Technetium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(311)	3	L8672c99
43	Tc XV	+14	Technetium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[338.55]	0.17	L10278
43	Tc XVI	+15	Technetium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(604)	3	L8672c99
43	Tc XVII	+16	Technetium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(655)	3	L8672c99
43	Tc XVIII	+17	Technetium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(713)	3	L8672c99
43	Tc XIX	+18	Technetium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(773)	3	L8672c99
43	Tc XX	+19	Technetium	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(829)	4	L8672c99
43	Tc XXI	+20	Technetium	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(904)	4	L8672c99
43	Tc XXII	+21	Technetium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(968)	4	L8672c99
43	Tc XXIII	+22	Technetium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(1 032)	4	L8672c99
43	Tc XXIV	+23	Technetium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(1 102)	4	L8672c99
43	Tc XXV	+24	Technetium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(1 166)	4	L8672c99
43	Tc XXVI	+25	Technetium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[1 354]	4	L11770
43	Tc XXVII	+26	Technetium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[1 411.6]	1.5	L11770
43	Tc XXVIII	+27	Technetium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[1 479.5]	2.0	L11770
43	Tc XXIX	+28	Technetium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[1 559]	6	L11770
43	Tc XXX	+29	Technetium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[1 638]	4	L11770
43	Tc XXXI	+30	Technetium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[1 689]	8	L11770
43	Tc XXXII	+31	Technetium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[1 838]	3	L11770
43	Tc XXXIII	+32	Technetium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[1 900.28]	0.06	L11770
43	Tc XXXIV	+33	Technetium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[4 505.0]	2.5	L11770
43	Tc XXXV	+34	Technetium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[4 681]	8	L11770
43	Tc XXXVI	+35	Technetium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	[4 874]	10	L11770
43	Tc XXXVII	+36	Technetium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	[5 060]	40	L11770
43	Tc XXXVIII	+37	Technetium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[5 361]	6	L11770
43	Tc XXXIX	+38	Technetium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[5 570]	4	L11770
43	Tc XL	+39	Technetium	Be	1s²2s²	¹S₀	2s ²S_1/2	[5 838]	6	L11770
43	Tc XLI	+40	Technetium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(6 008.391)	0.017	L16264c99
43	Tc XLII	+41	Technetium	He	1s²	¹S₀	1s ²S_1/2	(25 004.533)	0.017	L12128
43	Tc XLIII	+42	Technetium	H	1s	²S_¹/₂		(25 786.990)	0.025	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Ru (all spectra) 44 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty^b (eV)	References
44	Ru I	0	Ruthenium	Ru	[Kr]4d⁷5s	⁵F₅	4d⁷ ⁴F_9/2	7.36050	0.00005	L10032
44	Ru II	+1	Ruthenium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	[16.76]	0.06	L17219
44	Ru III	+2	Ruthenium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	[28.47]		L3466,L17276
44	Ru IV	+3	Ruthenium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(45.0)	1.7	L8672c99
44	Ru V	+4	Ruthenium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(59.0)	1.9	L8672c99
44	Ru VI	+5	Ruthenium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(76.0)	2.0	L8672c99
44	Ru VII	+6	Ruthenium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(93.0)	2.0	L8672c99
44	Ru VIII	+7	Ruthenium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(110.0)	2.1	L8672c99
44	Ru IX	+8	Ruthenium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	[178.41]	0.05	L1798
44	Ru X	+9	Ruthenium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(198.0)	2.2	L8672c99
44	Ru XI	+10	Ruthenium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(219.9)	2.4	L8672c99
44	Ru XII	+11	Ruthenium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(245.0)	2.5	L8672c99
44	Ru XIII	+12	Ruthenium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(271)	3	L8672c99
44	Ru XIV	+13	Ruthenium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	[295.90]	0.09	L6833
44	Ru XV	+14	Ruthenium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(348)	3	L8672c99
44	Ru XVI	+15	Ruthenium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	376.25	0.10	L5953
44	Ru XVII	+16	Ruthenium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(670)	3	L8672c99
44	Ru XVIII	+17	Ruthenium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(723)	3	L8672c99
44	Ru XIX	+18	Ruthenium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(784)	3	L8672c99
44	Ru XX	+19	Ruthenium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(845)	4	L8672c99
44	Ru XXI	+20	Ruthenium	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(905)	4	L8672c99
44	Ru XXII	+21	Ruthenium	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(981)	4	L8672c99
44	Ru XXIII	+22	Ruthenium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(1 048)	4	L8672c99
44	Ru XXIV	+23	Ruthenium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(1 115)	4	L8672c99
44	Ru XXV	+24	Ruthenium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(1 187)	4	L8672c99
44	Ru XXVI	+25	Ruthenium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(1 253)	4	L8672c99
44	Ru XXVII	+26	Ruthenium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[1 447]	4	L11770
44	Ru XXVIII	+27	Ruthenium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[1 506.7]	1.6	L11770
44	Ru XXIX	+28	Ruthenium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[1 577.0]	2.1	L11770
44	Ru XXX	+29	Ruthenium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[1 659]	6	L11770
44	Ru XXXI	+30	Ruthenium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[1 743]	4	L11770
44	Ru XXXII	+31	Ruthenium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[1 794]	8	L11770
44	Ru XXXIII	+32	Ruthenium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[1 949]	3	L11770
44	Ru XXXIV	+33	Ruthenium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[2 013.04]	0.06	L11770
44	Ru XXXV	+34	Ruthenium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[4 758]	3	L11770
44	Ru XXXVI	+35	Ruthenium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[4 939]	8	L11770
44	Ru XXXVII	+36	Ruthenium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	[5 136]	11	L11770
44	Ru XXXVIII	+37	Ruthenium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	[5 330]	40	L11770
44	Ru XXXIX	+38	Ruthenium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[5 647]	6	L11770
44	Ru XL	+39	Ruthenium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[5 861]	4	L11770
44	Ru XLI	+40	Ruthenium	Be	1s²2s²	¹S₀	2s ²S_1/2	[6 137]	6	L11770
44	Ru XLII	+41	Ruthenium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(6 311.721)	0.019	L16264c99
44	Ru XLIII	+42	Ruthenium	He	1s²	¹S₀	1s ²S_1/2	(26 229.895)	0.007	L12128
44	Ru XLIV	+43	Ruthenium	H	1s	²S_¹/₂		(27 033.502)	0.025	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Rh (all spectra) 45 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty^b (eV)	References
45	Rh I	0	Rhodium	Rh	[Kr]4d⁸5s	⁴F_⁹/₂	4d⁸ ³F₄	7.45890	0.00005	L10032
45	Rh II	+1	Rhodium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	[18.08]		L3466
45	Rh III	+2	Rhodium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	[31.06]		L3466,L17276
45	Rh IV	+3	Rhodium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(42.0)	1.7	L8672c99
45	Rh V	+4	Rhodium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(63.0)	1.9	L8672c99
45	Rh VI	+5	Rhodium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(80.0)	2.0	L8672c99
45	Rh VII	+6	Rhodium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(97.0)	2.0	L8672c99
45	Rh VIII	+7	Rhodium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(115.1)	2.1	L8672c99
45	Rh IX	+8	Rhodium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(135.0)	2.2	L8672c99
45	Rh X	+9	Rhodium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	[207.51]	0.05	L1798
45	Rh XI	+10	Rhodium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(228.0)	2.4	L8672c99
45	Rh XII	+11	Rhodium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(252.1)	2.5	L8672c99
45	Rh XIII	+12	Rhodium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(277)	3	L8672c99
45	Rh XIV	+13	Rhodium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(306)	3	L8672c99
45	Rh XV	+14	Rhodium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	[331.58]	0.14	L6833
45	Rh XVI	+15	Rhodium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(389.3)	0.5	L13202
45	Rh XVII	+16	Rhodium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[415.97]	0.14	L5953
45	Rh XVIII	+17	Rhodium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(739)	3	L8672c99
45	Rh XIX	+18	Rhodium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(794)	3	L8672c99
45	Rh XX	+19	Rhodium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(857)	4	L8672c99
45	Rh XXI	+20	Rhodium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(921)	4	L8672c99
45	Rh XXII	+21	Rhodium	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(984)	4	L8672c99
45	Rh XXIII	+22	Rhodium	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(1 061)	4	L8672c99
45	Rh XXIV	+23	Rhodium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(1 131)	4	L8672c99
45	Rh XXV	+24	Rhodium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(1 202)	4	L8672c99
45	Rh XXVI	+25	Rhodium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(1 274)	4	L8672c99
45	Rh XXVII	+26	Rhodium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(1 344)	4	L8672c99
45	Rh XXVIII	+27	Rhodium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[1 544]	5	L11770
45	Rh XXIX	+28	Rhodium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[1 604.9]	1.7	L11770
45	Rh XXX	+29	Rhodium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[1 677.6]	2.2	L11770
45	Rh XXXI	+30	Rhodium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[1 763]	7	L11770
45	Rh XXXII	+31	Rhodium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[1 851]	4	L11770
45	Rh XXXIII	+32	Rhodium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[1 903]	9	L11770
45	Rh XXXIV	+33	Rhodium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[2 063]	3	L11770
45	Rh XXXV	+34	Rhodium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[2 129.22]	0.07	L11770
45	Rh XXXVI	+35	Rhodium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[5 018]	3	L11770
45	Rh XXXVII	+36	Rhodium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[5 203]	8	L11770
45	Rh XXXVIII	+37	Rhodium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	[5 406]	11	L11770
45	Rh XXXIX	+38	Rhodium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	[5 600]	40	L11770
45	Rh XL	+39	Rhodium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[5 940]	7	L11770
45	Rh XLI	+40	Rhodium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[6 161]	5	L11770
45	Rh XLII	+41	Rhodium	Be	1s²2s²	¹S₀	2s ²S_1/2	[6 444]	6	L11770
45	Rh XLIII	+42	Rhodium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(6 623.262)	0.020	L16264c99
45	Rh XLIV	+43	Rhodium	He	1s²	¹S₀	1s ²S_1/2	(27 486.983)	0.007	L12128
45	Rh XLV	+44	Rhodium	H	1s	²S_¹/₂		(28 311.965)	0.025	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Pd (all spectra) 46 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty^b (eV)	References
46	Pd I	0	Palladium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	8.336839	0.000010	L20363
46	Pd II	+1	Palladium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	[19.43]	0.12	L3466,L17501
46	Pd III	+2	Palladium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	[32.93]		L17276
46	Pd IV	+3	Palladium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(46.0)	1.7	L8672c99
46	Pd V	+4	Palladium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(61.0)	1.9	L8672c99
46	Pd VI	+5	Palladium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(84.1)	2.0	L8672c99
46	Pd VII	+6	Palladium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(101.0)	2.0	L8672c99
46	Pd VIII	+7	Palladium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(120.0)	2.1	L8672c99
46	Pd IX	+8	Palladium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(141.0)	2.2	L8672c99
46	Pd X	+9	Palladium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(159.9)	2.2	L8672c99
46	Pd XI	+10	Palladium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	[238.57]	0.12	L1798
46	Pd XII	+11	Palladium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(260.0)	2.5	L8672c99
46	Pd XIII	+12	Palladium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(286)	3	L8672c99
46	Pd XIV	+13	Palladium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(311)	3	L8672c99
46	Pd XV	+14	Palladium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(342)	3	L8672c99
46	Pd XVI	+15	Palladium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	[369.10]	0.15	L6833
46	Pd XVII	+16	Palladium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(427)	3	L8672c99
46	Pd XVIII	+17	Palladium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[457.50]	0.15	L5953
46	Pd XIX	+18	Palladium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(810)	3	L8672c99
46	Pd XX	+19	Palladium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(869)	4	L8672c99
46	Pd XXI	+20	Palladium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(933)	4	L8672c99
46	Pd XXII	+21	Palladium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(1 000)	4	L8672c99
46	Pd XXIII	+22	Palladium	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(1 065)	4	L8672c99
46	Pd XXIV	+23	Palladium	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(1 145)	4	L8672c99
46	Pd XXV	+24	Palladium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(1 218)	4	L8672c99
46	Pd XXVI	+25	Palladium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(1 290)	4	L8672c99
46	Pd XXVII	+26	Palladium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(1 366)	4	L8672c99
46	Pd XXVIII	+27	Palladium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(1 438)	4	L8672c99
46	Pd XXIX	+28	Palladium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[1 644]	5	L11770
46	Pd XXX	+29	Palladium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[1 706.2]	1.8	L11770
46	Pd XXXI	+30	Palladium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[1 781.3]	2.3	L11770
46	Pd XXXII	+31	Palladium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[1 869]	7	L11770
46	Pd XXXIII	+32	Palladium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[1 962]	4	L11770
46	Pd XXXIV	+33	Palladium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[2 016]	9	L11770
46	Pd XXXV	+34	Palladium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[2 181]	3	L11770
46	Pd XXXVI	+35	Palladium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[2 248.87]	0.07	L11770
46	Pd XXXVII	+36	Palladium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[5 284]	3	L11770
46	Pd XXXVIII	+37	Palladium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[5 475]	9	L11770
46	Pd XXXIX	+38	Palladium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	[5 683]	11	L11770
46	Pd XL	+39	Palladium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	[5 880]	40	L11770
46	Pd XLI	+40	Palladium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[6 242]	7	L11770
46	Pd XLII	+41	Palladium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[6 469]	5	L11770
46	Pd XLIII	+42	Palladium	Be	1s²2s²	¹S₀	2s ²S_1/2	[6 759]	6	L11770
46	Pd XLIV	+43	Palladium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(6 943.096)	0.022	L16264c99
46	Pd XLV	+44	Palladium	He	1s²	¹S₀	1s ²S_1/2	(28 776.034)	0.009	L12128
46	Pd XLVI	+45	Palladium	H	1s	²S_¹/₂		(29 622.60)	0.04	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Ag (all spectra) 47 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
47	Ag I	0	Silver	Ag	[Kr]4d¹⁰5s	²S_¹/₂	4d¹⁰ ¹S₀	7.576234	0.000025	L11835
47	Ag II	+1	Silver	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	21.4844	0.0009	L18362
47	Ag III	+2	Silver	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	[34.8]	0.3	L17276
47	Ag IV	+3	Silver	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(49.0)	1.7	L8672c99
47	Ag V	+4	Silver	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(65.0)	1.9	L8672c99
47	Ag VI	+5	Silver	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(82.0)	2.0	L8672c99
47	Ag VII	+6	Silver	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(106.0)	2.0	L8672c99
47	Ag VIII	+7	Silver	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(125.0)	2.1	L8672c99
47	Ag IX	+8	Silver	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(145.1)	2.2	L8672c99
47	Ag X	+9	Silver	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(167.0)	2.2	L8672c99
47	Ag XI	+10	Silver	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(188.0)	2.4	L8672c99
47	Ag XII	+11	Silver	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	[271.46]	0.12	L1798
47	Ag XIII	+12	Silver	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(294)	3	L8672c99
47	Ag XIV	+13	Silver	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(321)	3	L8672c99
47	Ag XV	+14	Silver	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(347)	3	L8672c99
47	Ag XVI	+15	Silver	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(381)	3	L8672c99
47	Ag XVII	+16	Silver	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	[408.43]	0.16	L6833
47	Ag XVIII	+17	Silver	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(469)	3	L8672c99
47	Ag XIX	+18	Silver	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[500.87]	0.16	L5953
47	Ag XX	+19	Silver	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(885)	4	L8672c99
47	Ag XXI	+20	Silver	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(946)	4	L8672c99
47	Ag XXII	+21	Silver	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(1 013)	4	L8672c99
47	Ag XXIII	+22	Silver	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(1 082)	4	L8672c99
47	Ag XXIV	+23	Silver	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(1 149)	4	L8672c99
47	Ag XXV	+24	Silver	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(1 231)	4	L8672c99
47	Ag XXVI	+25	Silver	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(1 308)	4	L8672c99
47	Ag XXVII	+26	Silver	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(1 382)	4	L8672c99
47	Ag XXVIII	+27	Silver	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(1 460)	4	L8672c99
47	Ag XXIX	+28	Silver	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(1 535)	4	L8672c99
47	Ag XXX	+29	Silver	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[1 747]	5	L11770
47	Ag XXXI	+30	Silver	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[1 810.5]	1.9	L11770
47	Ag XXXII	+31	Silver	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[1 888.0]	2.4	L11770
47	Ag XXXIII	+32	Silver	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[1 979]	8	L11770
47	Ag XXXIV	+33	Silver	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[2 077]	4	L11770
47	Ag XXXV	+34	Silver	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[2 131]	10	L11770
47	Ag XXXVI	+35	Silver	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[2 302]	3	L11770
47	Ag XXXVII	+36	Silver	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[2 371.99]	0.07	L11770
47	Ag XXXVIII	+37	Silver	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[5 558]	3	L11770
47	Ag XXXIX	+38	Silver	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[5 753]	9	L11770
47	Ag XL	+39	Silver	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	[5 966]	12	L11770
47	Ag XLI	+40	Silver	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	[6 170]	40	L11770
47	Ag XLII	+41	Silver	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[6 551]	7	L11770
47	Ag XLIII	+42	Silver	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[6 785]	5	L11770
47	Ag XLIV	+43	Silver	Be	1s²2s²	¹S₀	2s ²S_1/2	[7 082]	7	L11770
47	Ag XLV	+44	Silver	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(7 271.298)	0.024	L16264c99
47	Ag XLVI	+45	Silver	He	1s²	¹S₀	1s ²S_1/2	(30 097.318)	0.009	L12128
47	Ag XLVII	+46	Silver	H	1s	²S_¹/₂		(30 965.698)	0.025	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶
[Kr] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Cd (all spectra) 48 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
48	Cd I	0	Cadmium	Cd	[Kr]4d¹⁰5s²	¹S₀	5s ²S_1/2	8.993820	0.000016	L18843
48	Cd II	+1	Cadmium	Ag	[Kr]4d¹⁰5s	²S_¹/₂	4d¹⁰ ¹S₀	16.908313	0.000012	L3540
48	Cd III	+2	Cadmium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	37.468	0.006	L11384
48	Cd IV	+3	Cadmium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(51.0)	1.7	L8672c99
48	Cd V	+4	Cadmium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(67.9)	1.9	L8672c99
48	Cd VI	+5	Cadmium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(87.0)	2.0	L8672c99
48	Cd VII	+6	Cadmium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(105.0)	2.0	L8672c99
48	Cd VIII	+7	Cadmium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(130.1)	2.1	L8672c99
48	Cd IX	+8	Cadmium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(150.0)	2.2	L8672c99
48	Cd X	+9	Cadmium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(173.0)	2.2	L8672c99
48	Cd XI	+10	Cadmium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(195.0)	2.4	L8672c99
48	Cd XII	+11	Cadmium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(218.0)	2.5	L8672c99
48	Cd XIII	+12	Cadmium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(305)	3	L8672c99
48	Cd XIV	+13	Cadmium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(329)	3	L8672c99
48	Cd XV	+14	Cadmium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(358)	3	L8672c99
48	Cd XVI	+15	Cadmium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(385)	3	L8672c99
48	Cd XVII	+16	Cadmium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(421)	3	L8672c99
48	Cd XVIII	+17	Cadmium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	[452.6]	0.3	L6833
48	Cd XIX	+18	Cadmium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(513)	3	L8672c99
48	Cd XX	+19	Cadmium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[546.19]	0.17	L5953
48	Cd XXI	+20	Cadmium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(963)	4	L8672c99
48	Cd XXII	+21	Cadmium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(1 026)	4	L8672c99
48	Cd XXIII	+22	Cadmium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(1 095)	4	L8672c99
48	Cd XXIV	+23	Cadmium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(1 167)	4	L8672c99
48	Cd XXV	+24	Cadmium	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(1 237)	4	L8672c99
48	Cd XXVI	+25	Cadmium	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(1 320)	4	L8672c99
48	Cd XXVII	+26	Cadmium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(1 401)	4	L8672c99
48	Cd XXVIII	+27	Cadmium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(1 477)	4	L8672c99
48	Cd XXIX	+28	Cadmium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(1 558)	4	L8672c99
48	Cd XXX	+29	Cadmium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(1 635)	4	L8672c99
48	Cd XXXI	+30	Cadmium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[1 852]	5	L11770
48	Cd XXXII	+31	Cadmium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[1 917.9]	2.0	L11770
48	Cd XXXIII	+32	Cadmium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[1 998]	3	L11770
48	Cd XXXIV	+33	Cadmium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[2 091]	8	L11770
48	Cd XXXV	+34	Cadmium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[2 195]	4	L11770
48	Cd XXXVI	+35	Cadmium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[2 250]	10	L11770
48	Cd XXXVII	+36	Cadmium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[2 427]	3	L11770
48	Cd XXXVIII	+37	Cadmium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[2 498.62]	0.08	L11770
48	Cd XXXIX	+38	Cadmium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[5 839]	3	L11770
48	Cd XL	+39	Cadmium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[6 039]	9	L11770
48	Cd XLI	+40	Cadmium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	[6 257]	12	L11770
48	Cd XLII	+41	Cadmium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	[6 460]	40	L11770
48	Cd XLIII	+42	Cadmium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[6 869]	8	L11770
48	Cd XLIV	+43	Cadmium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[7 109]	5	L11770
48	Cd XLV	+44	Cadmium	Be	1s²2s²	¹S₀	2s ²S_1/2	[7 414]	7	L11770
48	Cd XLVI	+45	Cadmium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(7 607.95)	0.03	L16264c99
48	Cd XLVII	+46	Cadmium	He	1s²	¹S₀	1s ²S_1/2	(31 451.061)	0.009	L12128
48	Cd XLVIII	+47	Cadmium	H	1s	²S_¹/₂		(32 341.49)	0.04	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶
[Kr] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data In (all spectra) 49 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
49	In I	0	Indium	In	[Cd]5p	²P°_¹/₂	5s² ¹S₀	5.7863556	0.0000007	L5566
49	In II	+1	Indium	Cd	[Kr]4d¹⁰5s²	¹S₀	5s ²S_1/2	18.87041	0.00003	L18318
49	In III	+2	Indium	Ag	[Kr]4d¹⁰5s	²S_¹/₂	4d¹⁰ ¹S₀	28.04415	0.00012	L4327
49	In IV	+3	Indium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	55.45	0.04	L11384
49	In V	+4	Indium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	[69.3]	1.2	L4316c99
49	In VI	+5	Indium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(90.0)	2.0	L8672c99
49	In VII	+6	Indium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(109.0)	2.0	L8672c99
49	In VIII	+7	Indium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(130.1)	2.1	L8672c99
49	In IX	+8	Indium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(156.0)	2.2	L8672c99
49	In X	+9	Indium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(178.0)	2.2	L8672c99
49	In XI	+10	Indium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(201.0)	2.4	L8672c99
49	In XII	+11	Indium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(226.0)	2.5	L8672c99
49	In XIII	+12	Indium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(249)	3	L8672c99
49	In XIV	+13	Indium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(341)	3	L8672c99
49	In XV	+14	Indium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(368)	3	L8672c99
49	In XVI	+15	Indium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(396)	3	L8672c99
49	In XVII	+16	Indium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(425)	3	L8672c99
49	In XVIII	+17	Indium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(462)	3	L8672c99
49	In XIX	+18	Indium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	[497.1]	0.3	L6833
49	In XX	+19	Indium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(560)	4	L8672c99
49	In XXI	+20	Indium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[593.38]	0.20	L5953
49	In XXII	+21	Indium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(1 043)	4	L8672c99
49	In XXIII	+22	Indium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(1 109)	4	L8672c99
49	In XXIV	+23	Indium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(1 181)	4	L8672c99
49	In XXV	+24	Indium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(1 255)	4	L8672c99
49	In XXVI	+25	Indium	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(1 328)	4	L8672c99
49	In XXVII	+26	Indium	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(1 413)	4	L8672c99
49	In XXVIII	+27	Indium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(1 496)	4	L8672c99
49	In XXIX	+28	Indium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(1 575)	4	L8672c99
49	In XXX	+29	Indium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(1 659)	4	L8672c99
49	In XXXI	+30	Indium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(1 738)	4	L8672c99
49	In XXXII	+31	Indium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[1 961]	5	L11770
49	In XXXIII	+32	Indium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[2 028.5]	2.1	L11770
49	In XXXIV	+33	Indium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[2 111]	3	L11770
49	In XXXV	+34	Indium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[2 207]	8	L11770
49	In XXXVI	+35	Indium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[2 317]	5	L11770
49	In XXXVII	+36	Indium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[2 373]	11	L11770
49	In XXXVIII	+37	Indium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[2 555]	3	L11770
49	In XXXIX	+38	Indium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[2 628.77]	0.08	L11770
49	In XL	+39	Indium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[6 126]	3	L11770
49	In XLI	+40	Indium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[6 331]	10	L11770
49	In XLII	+41	Indium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	[6 554]	13	L11770
49	In XLIII	+42	Indium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	[6 770]	50	L11770
49	In XLIV	+43	Indium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[7 196]	8	L11770
49	In XLV	+44	Indium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[7 442]	6	L11770
49	In XLVI	+45	Indium	Be	1s²2s²	¹S₀	2s ²S_1/2	[7 754]	7	L11770
49	In XLVII	+46	Indium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(7 953.14)	0.03	L16264c99
49	In XLVIII	+47	Indium	He	1s²	¹S₀	1s ²S_1/2	(32 837.592)	0.010	L12128
49	In XLIX	+48	Indium	H	1s	²S_¹/₂		(33 750.31)	0.04	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶
[Kr] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶
[Cd] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Sn (all spectra) 50 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
50	Sn I	0	Tin	Sn	[Cd]5p²	³P₀	5s²5p ²P°_1/2	7.343918	0.000012	L3936
50	Sn II	+1	Tin	In	[Cd]5p	²P°_¹/₂	5s² ¹S₀	14.63307	0.00009	L18891
50	Sn III	+2	Tin	Cd	[Kr]4d¹⁰5s²	¹S₀	5s ²S_1/2	30.506	0.003	L18161
50	Sn IV	+3	Tin	Ag	[Kr]4d¹⁰5s	²S_¹/₂	4d¹⁰ ¹S₀	40.74	0.04	L3466c99
50	Sn V	+4	Tin	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	77.03	0.04	L11384
50	Sn VI	+5	Tin	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(94.0)	2.0	L8672c99
50	Sn VII	+6	Tin	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(112.9)	2.0	L8672c99
50	Sn VIII	+7	Tin	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(135.0)	2.1	L8672c99
50	Sn IX	+8	Tin	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(156.0)	2.2	L8672c99
50	Sn X	+9	Tin	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(184.0)	2.2	L8672c99
50	Sn XI	+10	Tin	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(208.0)	2.4	L8672c99
50	Sn XII	+11	Tin	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(232.0)	2.5	L8672c99
50	Sn XIII	+12	Tin	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(258)	3	L8672c99
50	Sn XIV	+13	Tin	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(282)	3	L8672c99
50	Sn XV	+14	Tin	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(379)	3	L8672c99
50	Sn XVI	+15	Tin	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(407)	3	L8672c99
50	Sn XVII	+16	Tin	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(437)	3	L8672c99
50	Sn XVIII	+17	Tin	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(466)	3	L8672c99
50	Sn XIX	+18	Tin	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(506)	3	L8672c99
50	Sn XX	+19	Tin	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(537)	4	L8672c99
50	Sn XXI	+20	Tin	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(608)	4	L8672c99
50	Sn XXII	+21	Tin	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[642.35]	0.22	L5953
50	Sn XXIII	+22	Tin	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(1 127)	4	L8672c99
50	Sn XXIV	+23	Tin	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(1 195)	4	L8672c99
50	Sn XXV	+24	Tin	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(1 269)	4	L8672c99
50	Sn XXVI	+25	Tin	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(1 347)	4	L8672c99
50	Sn XXVII	+26	Tin	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(1 421)	4	L8672c99
50	Sn XXVIII	+27	Tin	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(1 508)	4	L8672c99
50	Sn XXIX	+28	Tin	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(1 596)	4	L8672c99
50	Sn XXX	+29	Tin	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(1 676)	4	L8672c99
50	Sn XXXI	+30	Tin	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(1 763)	4	L8672c99
50	Sn XXXII	+31	Tin	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(1 844)	4	L8672c99
50	Sn XXXIII	+32	Tin	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[2 074]	6	L11770
50	Sn XXXIV	+33	Tin	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[2 142.1]	2.1	L11770
50	Sn XXXV	+34	Tin	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	[2 227]	3	L11770
50	Sn XXXVI	+35	Tin	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	[2 326]	9	L11770
50	Sn XXXVII	+36	Tin	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[2 443]	5	L11770
50	Sn XXXVIII	+37	Tin	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[2 499]	11	L11770
50	Sn XXXIX	+38	Tin	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[2 687]	4	L11770
50	Sn XL	+39	Tin	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[2 762.49]	0.08	L11770
50	Sn XLI	+40	Tin	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[6 421]	3	L11770
50	Sn XLII	+41	Tin	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[6 631]	10	L11770
50	Sn XLIII	+42	Tin	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	[6 859]	13	L11770
50	Sn XLIV	+43	Tin	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	[7 080]	50	L11770
50	Sn XLV	+44	Tin	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[7 531]	8	L11770
50	Sn XLVI	+45	Tin	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(7 790)	4	L8672c99
50	Sn XLVII	+46	Tin	Be	1s²2s²	¹S₀	2s ²S_1/2	[8 103]	7	L11770
50	Sn XLVIII	+47	Tin	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(8 306.95)	0.04	L16264c99
50	Sn XLIX	+48	Tin	He	1s²	¹S₀	1s ²S_1/2	(34 257.142)	0.010	L12128
50	Sn L	+49	Tin	H	1s	²S_¹/₂		(35 192.39)	0.04	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Sb (all spectra) 51 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty^b (eV)	References
51	Sb I	0	Antimony	Sb	[Cd]5p³	⁴S°_³/₂	5s²5p² ³P₀	8.608389	0.000012	L8844,L6684
51	Sb II	+1	Antimony	Sn	[Cd]5p²	³P₀	5s²5p ²P_1/2	16.626	0.025	L16370,L8844
51	Sb III	+2	Antimony	In	[Cd]5p	²P°_¹/₂	5s² ¹S₀	25.3235		L3466,L16241
51	Sb IV	+3	Antimony	Cd	[Kr]4d¹⁰5s²	¹S₀	5s ²S_1/2	43.804	0.025	L11767
51	Sb V	+4	Antimony	Ag	[Kr]4d¹⁰5s	²S_¹/₂	4d¹⁰ ¹S₀	[55.00]	0.10	L5984
51	Sb VI	+5	Antimony	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	99.51	0.05	L11384
51	Sb VII	+6	Antimony	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(117.0)	2.0	L8672c99
51	Sb VIII	+7	Antimony	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(139.0)	2.1	L8672c99
51	Sb IX	+8	Antimony	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(162.0)	2.2	L8672c99
51	Sb X	+9	Antimony	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(185.0)	2.2	L8672c99
51	Sb XI	+10	Antimony	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(214.0)	2.4	L8672c99
51	Sb XII	+11	Antimony	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(238.0)	2.5	L8672c99
51	Sb XIII	+12	Antimony	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(265)	3	L8672c99
51	Sb XIV	+13	Antimony	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(292)	3	L8672c99
51	Sb XV	+14	Antimony	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(317)	3	L8672c99
51	Sb XVI	+15	Antimony	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(420)	3	L8672c99
51	Sb XVII	+16	Antimony	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(447)	3	L8672c99
51	Sb XVIII	+17	Antimony	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(479)	3	L8672c99
51	Sb XIX	+18	Antimony	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(510)	3	L8672c99
51	Sb XX	+19	Antimony	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(552)	4	L8672c99
51	Sb XXI	+20	Antimony	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(584)	4	L8672c99
51	Sb XXII	+21	Antimony	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(657)	4	L8672c99
51	Sb XXIII	+22	Antimony	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[693.26]	0.24	L10922
51	Sb XXIV	+23	Antimony	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(1 214)	4	L8672c99
51	Sb XXV	+24	Antimony	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(1 285)	4	L8672c99
51	Sb XXVI	+25	Antimony	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(1 360)	4	L8672c99
51	Sb XXVII	+26	Antimony	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(1 441)	4	L8672c99
51	Sb XXVIII	+27	Antimony	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(1 518)	4	L8672c99
51	Sb XXIX	+28	Antimony	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(1 606)	4	L8672c99
51	Sb XXX	+29	Antimony	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(1 698)	4	L8672c99
51	Sb XXXI	+30	Antimony	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(1 781)	4	L8672c99
51	Sb XXXII	+31	Antimony	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(1 869)	4	L8672c99
51	Sb XXXIII	+32	Antimony	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(1 954)	4	L8672c99
51	Sb XXXIV	+33	Antimony	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(2 190)	5	L8672c99
51	Sb XXXV	+34	Antimony	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(2 266)	5	L8672c99
51	Sb XXXVI	+35	Antimony	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	(2 349)	5	L8672c99
51	Sb XXXVII	+36	Antimony	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	(2 428)	5	L8672c99
51	Sb XXXVIII	+37	Antimony	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(2 567)	4	L8672c99
51	Sb XXXIX	+38	Antimony	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(2 654)	4	L8672c99
51	Sb XL	+39	Antimony	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(2 815)	4	L8672c99
51	Sb XLI	+40	Antimony	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[2 900.0]	0.5	L10264c99
51	Sb XLII	+41	Antimony	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(6 714)	4	L8672c99
51	Sb XLIII	+42	Antimony	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(6 929)	4	L8672c99
51	Sb XLIV	+43	Antimony	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(7 167)	4	L8672c99
51	Sb XLV	+44	Antimony	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(7 390)	4	L8672c99
51	Sb XLVI	+45	Antimony	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(7 887)	4	L8672c99
51	Sb XLVII	+46	Antimony	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(8 140)	4	L8672c99
51	Sb XLVIII	+47	Antimony	Be	1s²2s²	¹S₀	2s ²S_1/2	(8 455)	4	L8672c99
51	Sb XLIX	+48	Antimony	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(8 669.48)	0.04	L16264c99
51	Sb L	+49	Antimony	He	1s²	¹S₀	1s ²S_1/2	(35 710.028)	0.011	L12128
51	Sb LI	+50	Antimony	H	1s	²S_¹/₂		(36 668.05)	0.06	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶
[Kr] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶
[Cd] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²
^bUncertainties of some of the listed values are unknown.

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Te (all spectra) 52 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
52	Te I	0	Tellurium	Te	[Cd]5p⁴	³P₂	5s²5p³ ⁴S°_3/2	9.00966	0.00010	L5789c102
52	Te II	+1	Tellurium	Sb	[Cd]5p³	⁴S°_³/₂	5s²5p² ³P₀	18.6	0.4	L3546
52	Te III	+2	Tellurium	Sn	[Cd]5p²	³P₀	5s²5p ²P_1/2	27.84	0.04	L17749
52	Te IV	+3	Tellurium	In	[Cd]5p	²P°_¹/₂	5s² ¹S₀	37.4155	0.0012	L16261
52	Te V	+4	Tellurium	Cd	[Kr]4d¹⁰5s²	¹S₀	5s ²S_1/2	59.3	0.9	L11821c99
52	Te VI	+5	Tellurium	Ag	[Kr]4d¹⁰5s	²S_¹/₂	4d¹⁰ ¹S₀	(69.1)	2.0	L8672c99
52	Te VII	+6	Tellurium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	124.20	0.06	L11384
52	Te VIII	+7	Tellurium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(143.0)	2.1	L8672c99
52	Te IX	+8	Tellurium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(167.0)	2.2	L8672c99
52	Te X	+9	Tellurium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(191.1)	2.2	L8672c99
52	Te XI	+10	Tellurium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(215.0)	2.4	L8672c99
52	Te XII	+11	Tellurium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(245.0)	2.5	L8672c99
52	Te XIII	+12	Tellurium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(272)	3	L8672c99
52	Te XIV	+13	Tellurium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(299)	3	L8672c99
52	Te XV	+14	Tellurium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(328)	3	L8672c99
52	Te XVI	+15	Tellurium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(354)	3	L8672c99
52	Te XVII	+16	Tellurium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(461)	3	L8672c99
52	Te XVIII	+17	Tellurium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(491)	3	L8672c99
52	Te XIX	+18	Tellurium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(522)	3	L8672c99
52	Te XX	+19	Tellurium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(555)	4	L8672c99
52	Te XXI	+20	Tellurium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(599)	4	L8672c99
52	Te XXII	+21	Tellurium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(633)	4	L8672c99
52	Te XXIII	+22	Tellurium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(709)	4	L8672c99
52	Te XXIV	+23	Tellurium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[746.12]	0.25	L10922
52	Te XXV	+24	Tellurium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(1 304)	4	L8672c99
52	Te XXVI	+25	Tellurium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(1 377)	4	L8672c99
52	Te XXVII	+26	Tellurium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(1 455)	4	L8672c99
52	Te XXVIII	+27	Tellurium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(1 538)	4	L8672c99
52	Te XXIX	+28	Tellurium	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(1 618)	4	L8672c99
52	Te XXX	+29	Tellurium	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(1 707)	4	L8672c99
52	Te XXXI	+30	Tellurium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(1 803)	4	L8672c99
52	Te XXXII	+31	Tellurium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(1 889)	4	L8672c99
52	Te XXXIII	+32	Tellurium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(1 979)	4	L8672c99
52	Te XXXIV	+33	Tellurium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(2 066)	5	L8672c99
52	Te XXXV	+34	Tellurium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(2 309)	5	L8672c99
52	Te XXXVI	+35	Tellurium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(2 386)	5	L8672c99
52	Te XXXVII	+36	Tellurium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	(2 472)	5	L8672c99
52	Te XXXVIII	+37	Tellurium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	(2 552)	4	L8672c99
52	Te XXXIX	+38	Tellurium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(2 700)	4	L8672c99
52	Te XL	+39	Tellurium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(2 788)	4	L8672c99
52	Te XLI	+40	Tellurium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(2 954)	4	L8672c99
52	Te XLII	+41	Tellurium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[3 041.0]	0.5	L10264c99
52	Te XLIII	+42	Tellurium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(7 022)	4	L8672c99
52	Te XLIV	+43	Tellurium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(7 243)	4	L8672c99
52	Te XLV	+44	Tellurium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(7 485)	4	L8672c99
52	Te XLVI	+45	Tellurium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(7 714)	4	L8672c99
52	Te XLVII	+46	Tellurium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(8 240)	4	L8672c99
52	Te XLVIII	+47	Tellurium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(8 499)	4	L8672c99
52	Te XLIX	+48	Tellurium	Be	1s²2s²	¹S₀	2s ²S_1/2	(8 821)	4	L8672c99
52	Te L	+49	Tellurium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(9 040.83)	0.04	L16264c99
52	Te LI	+50	Tellurium	He	1s²	¹S₀	1s ²S_1/2	(37 196.521)	0.012	L12128
52	Te LII	+51	Tellurium	H	1s	²S_¹/₂		(38 177.56)	0.06	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data I (all spectra) 53 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
53	I I	0	Iodine	I	[Cd]5p⁵	²P°_³/₂	5s²5p⁴ ³P₂	10.451260	0.000025	L13998
53	I II	+1	Iodine	Te	[Cd]5p⁴	³P₂	5s²5p³ ⁴S_3/2	19.13126	0.00012	L7360
53	I III	+2	Iodine	Sb	[Cd]5p³	⁴S°_³/₂	5s²5p² ³P₀	29.570	0.025	L11993
53	I IV	+3	Iodine	Sn	[Cd]5p²	³P₀	5s²5p ²P_1/2	40.357	0.025	L11994
53	I V	+4	Iodine	In	[Cd]5p	²P°_¹/₂	5s² ¹S₀	51.52	0.04	L10105
53	I VI	+5	Iodine	Cd	[Kr]4d¹⁰5s²	¹S₀	5s ²S_1/2	[74.4]	0.4	L10105
53	I VII	+6	Iodine	Ag	[Kr]4d¹⁰5s	²S_¹/₂	4d¹⁰ ¹S₀	[87.61]	0.06	L5438
53	I VIII	+7	Iodine	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	150.81	0.10	L11384
53	I IX	+8	Iodine	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(171.0)	2.2	L8672c99
53	I X	+9	Iodine	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(197.0)	2.2	L8672c99
53	I XI	+10	Iodine	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(220.9)	2.4	L8672c99
53	I XII	+11	Iodine	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(247.0)	2.5	L8672c99
53	I XIII	+12	Iodine	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(279)	3	L8672c99
53	I XIV	+13	Iodine	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(307)	3	L8672c99
53	I XV	+14	Iodine	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(335)	3	L8672c99
53	I XVI	+15	Iodine	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(365)	3	L8672c99
53	I XVII	+16	Iodine	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(393)	3	L8672c99
53	I XVIII	+17	Iodine	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(505)	3	L8672c99
53	I XIX	+18	Iodine	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(535)	3	L8672c99
53	I XX	+19	Iodine	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(569)	4	L8672c99
53	I XXI	+20	Iodine	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(601)	4	L8672c99
53	I XXII	+21	Iodine	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(649)	4	L8672c99
53	I XXIII	+22	Iodine	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(683)	4	L8672c99
53	I XXIV	+23	Iodine	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(762)	4	L8672c99
53	I XXV	+24	Iodine	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[800.8]	0.4	L10278
53	I XXVI	+25	Iodine	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(1 397)	4	L8672c99
53	I XXVII	+26	Iodine	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(1 472)	4	L8672c99
53	I XXVIII	+27	Iodine	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(1 553)	4	L8672c99
53	I XXIX	+28	Iodine	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(1 639)	4	L8672c99
53	I XXX	+29	Iodine	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(1 720)	4	L8672c99
53	I XXXI	+30	Iodine	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(1 812)	4	L8672c99
53	I XXXII	+31	Iodine	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(1 911)	4	L8672c99
53	I XXXIII	+32	Iodine	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(1 999)	4	L8672c99
53	I XXXIV	+33	Iodine	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(2 093)	5	L8672c99
53	I XXXV	+34	Iodine	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(2 181)	5	L8672c99
53	I XXXVI	+35	Iodine	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(2 431)	5	L8672c99
53	I XXXVII	+36	Iodine	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(2 510)	5	L8672c99
53	I XXXVIII	+37	Iodine	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	(2 598)	4	L8672c99
53	I XXXIX	+38	Iodine	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	(2 680)	4	L8672c99
53	I XL	+39	Iodine	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(2 836)	4	L8672c99
53	I XLI	+40	Iodine	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(2 926)	4	L8672c99
53	I XLII	+41	Iodine	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(3 096)	4	L8672c99
53	I XLIII	+42	Iodine	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[3 185.5]	0.5	L10264c99
53	I XLIV	+43	Iodine	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(7 337)	4	L8672c99
53	I XLV	+44	Iodine	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(7 563)	4	L8672c99
53	I XLVI	+45	Iodine	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(7 811)	4	L8672c99
53	I XLVII	+46	Iodine	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(8 044)	4	L8672c99
53	I XLVIII	+47	Iodine	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(8 601)	4	L8672c99
53	I XLIX	+48	Iodine	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(8 867)	4	L8672c99
53	I L	+49	Iodine	Be	1s²2s²	¹S₀	2s ²S_1/2	(9 196)	4	L8672c99
53	I LI	+50	Iodine	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(9 421.10)	0.04	L16264c99
53	I LII	+51	Iodine	He	1s²	¹S₀	1s ²S_1/2	(38 716.995)	0.014	L12128
53	I LIII	+52	Iodine	H	1s	²S_¹/₂		(39 721.41)	0.05	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Xe (all spectra) 54 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
54	Xe I	0	Xenon	Xe	[Cd]5p⁶	¹S₀	5s²5p⁵ ²P°_3/2	12.1298436	0.0000015	L12013,L9794,L6426
54	Xe II	+1	Xenon	I	[Cd]5p⁵	²P°_³/₂	5s²5p⁴ ³P₂	[20.975]	0.004	L6925
54	Xe III	+2	Xenon	Te	[Cd]5p⁴	³P₂	5s²5p³ ⁴S_3/2	[31.05]	0.04	L4660,L10579
54	Xe IV	+3	Xenon	Sb	[Cd]5p³	⁴S°_³/₂	5s²5p² ³P₀	42.20	0.20	L8774
54	Xe V	+4	Xenon	Sn	[Cd]5p²	³P₀	5s²5p ²P_1/2	[54.1]	0.5	L11121
54	Xe VI	+5	Xenon	In	[Cd]5p	²P°_¹/₂	5s² ¹S₀	66.703	0.007	L11642
54	Xe VII	+6	Xenon	Cd	[Kr]4d¹⁰5s²	¹S₀	5s ²S_1/2	[91.6]	0.5	L6980
54	Xe VIII	+7	Xenon	Ag	[Kr]4d¹⁰5s	²S_¹/₂	4d¹⁰ ¹S₀	105.9778	0.0025	L9065
54	Xe IX	+8	Xenon	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	179.84	0.12	L11883
54	Xe X	+9	Xenon	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(202.0)	2.2	L8672c99
54	Xe XI	+10	Xenon	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	[229.02]	0.20	L12003
54	Xe XII	+11	Xenon	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(255.0)	2.5	L8672c99
54	Xe XIII	+12	Xenon	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(281)	3	L8672c99
54	Xe XIV	+13	Xenon	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(314)	3	L8672c99
54	Xe XV	+14	Xenon	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(343)	3	L8672c99
54	Xe XVI	+15	Xenon	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(374)	3	L8672c99
54	Xe XVII	+16	Xenon	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(404)	3	L8672c99
54	Xe XVIII	+17	Xenon	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(434)	3	L8672c99
54	Xe XIX	+18	Xenon	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(549)	3	L8672c99
54	Xe XX	+19	Xenon	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(582)	4	L8672c99
54	Xe XXI	+20	Xenon	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(616)	4	L8672c99
54	Xe XXII	+21	Xenon	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(650)	4	L8672c99
54	Xe XXIII	+22	Xenon	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(700)	4	L8672c99
54	Xe XXIV	+23	Xenon	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(736)	4	L8672c99
54	Xe XXV	+24	Xenon	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(818)	4	L8672c99
54	Xe XXVI	+25	Xenon	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[857.0]	0.4	L10107
54	Xe XXVII	+26	Xenon	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(1 493)	4	L8672c99
54	Xe XXVIII	+27	Xenon	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(1 571)	4	L8672c99
54	Xe XXIX	+28	Xenon	Fe	[Ar]3d⁸	(0,4)₄	3d⁷ ⁴F_9/2	(1 653)	4	L8672c99
54	Xe XXX	+29	Xenon	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(1 742)	4	L8672c99
54	Xe XXXI	+30	Xenon	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(1 826)	4	L8672c99
54	Xe XXXII	+31	Xenon	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(1 919)	4	L8672c99
54	Xe XXXIII	+32	Xenon	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(2 023)	4	L8672c99
54	Xe XXXIV	+33	Xenon	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(2 113)	5	L8672c99
54	Xe XXXV	+34	Xenon	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(2 209)	5	L8672c99
54	Xe XXXVI	+35	Xenon	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(2 300)	5	L8672c99
54	Xe XXXVII	+36	Xenon	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(2 556)	5	L8672c99
54	Xe XXXVIII	+37	Xenon	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(2 637)	4	L8672c99
54	Xe XXXIX	+38	Xenon	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	(2 726)	4	L8672c99
54	Xe XL	+39	Xenon	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	(2 811)	4	L8672c99
54	Xe XLI	+40	Xenon	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(2 975)	4	L8672c99
54	Xe XLII	+41	Xenon	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(3 068)	4	L8672c99
54	Xe XLIII	+42	Xenon	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(3 243)	4	L8672c99
54	Xe XLIV	+43	Xenon	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[3 333.8]	0.5	L10264c99
54	Xe XLV	+44	Xenon	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(7 660)	4	L8672c99
54	Xe XLVI	+45	Xenon	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(7 889)	4	L8672c99
54	Xe XLVII	+46	Xenon	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(8 144)	4	L8672c99
54	Xe XLVIII	+47	Xenon	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(8 382)	4	L8672c99
54	Xe XLIX	+48	Xenon	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(8 971)	4	L8672c99
54	Xe L	+49	Xenon	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(9 243)	4	L8672c99
54	Xe LI	+50	Xenon	Be	1s²2s²	¹S₀	2s ²S_1/2	(9 581)	4	L8672c99
54	Xe LII	+51	Xenon	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(9 810.37)	0.04	L16264c99
54	Xe LIII	+52	Xenon	He	1s²	¹S₀	1s ²S_1/2	(40 271.724)	0.016	L12128
54	Xe LIV	+53	Xenon	H	1s	²S_¹/₂		(41 299.71)	0.07	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Cs (all spectra) 55 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
55	Cs I	0	Cesium	Cs	[Xe]6s	²S_¹/₂	5s²5p⁶ ¹S₀	3.893905695	0.000000024	L19479
55	Cs II	+1	Cesium	Xe	[Cd]5p⁶	¹S₀	5s²5p⁵ ²P°_3/2	23.15745	0.00006	L6838
55	Cs III	+2	Cesium	I	[Cd]5p⁵	²P°_³/₂	5s²5p⁴ ³P₂	[33.195]	0.004	L14869
55	Cs IV	+3	Cesium	Te	[Cd]5p⁴	³P₂	5s²5p³ ⁴S°_3/2	(43.0)	1.7	L8672c99
55	Cs V	+4	Cesium	Sb	[Cd]5p³	⁴S°_³/₂	5s²5p² ³P₀	(56.0)	1.9	L8672c99
55	Cs VI	+5	Cesium	Sn	[Cd]5p²	³P₀	5s²5p ²P°_1/2	(69.1)	2.0	L8672c99
55	Cs VII	+6	Cesium	In	[Cd]5p	²P°_¹/₂	5s² ¹S₀	(82.9)	2.0	L8672c99
55	Cs VIII	+7	Cesium	Cd	[Kr]4d¹⁰5s²	¹S₀	5s ²S_1/2	[110.1]	0.6	L6980
55	Cs IX	+8	Cesium	Ag	[Kr]4d¹⁰5s	²S_¹/₂	4d¹⁰ ¹S₀	[125.61]	0.09	L5438
55	Cs X	+9	Cesium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	213.3	2.5	L11384c99
55	Cs XI	+10	Cesium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(233.0)	2.4	L8672c99
55	Cs XII	+11	Cesium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(261.0)	2.5	L8672c99
55	Cs XIII	+12	Cesium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(289)	3	L8672c99
55	Cs XIV	+13	Cesium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(316)	3	L8672c99
55	Cs XV	+14	Cesium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(352)	3	L8672c99
55	Cs XVI	+15	Cesium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(382)	3	L8672c99
55	Cs XVII	+16	Cesium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(413)	3	L8672c99
55	Cs XVIII	+17	Cesium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(445)	3	L8672c99
55	Cs XIX	+18	Cesium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(476)	3	L8672c99
55	Cs XX	+19	Cesium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(597)	4	L8672c99
55	Cs XXI	+20	Cesium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(629)	4	L8672c99
55	Cs XXII	+21	Cesium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(666)	4	L8672c99
55	Cs XXIII	+22	Cesium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(700)	4	L8672c99
55	Cs XXIV	+23	Cesium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(753)	4	L8672c99
55	Cs XXV	+24	Cesium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(791)	4	L8672c99
55	Cs XXVI	+25	Cesium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(875)	4	L8672c99
55	Cs XXVII	+26	Cesium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[916.1]	0.5	L10278
55	Cs XXVIII	+27	Cesium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(1 592)	4	L8672c99
55	Cs XXIX	+28	Cesium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(1 672)	4	L8672c99
55	Cs XXX	+29	Cesium	Fe	[Ar]3d⁸	(0,4)₄	3d⁷ ⁴F_9/2	(1 757)	4	L8672c99
55	Cs XXXI	+30	Cesium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(1 848)	4	L8672c99
55	Cs XXXII	+31	Cesium	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(1 936)	4	L8672c99
55	Cs XXXIII	+32	Cesium	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀	(2 029)	4	L8672c99
55	Cs XXXIV	+33	Cesium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(2 137)	5	L8672c99
55	Cs XXXV	+34	Cesium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(2 230)	5	L8672c99
55	Cs XXXVI	+35	Cesium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(2 329)	5	L8672c99
55	Cs XXXVII	+36	Cesium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(2 422)	5	L8672c99
55	Cs XXXVIII	+37	Cesium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(2 683)	4	L8672c99
55	Cs XXXIX	+38	Cesium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(2 767)	4	L8672c99
55	Cs XL	+39	Cesium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	(2 859)	4	L8672c99
55	Cs XLI	+40	Cesium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	(2 945)	4	L8672c99
55	Cs XLII	+41	Cesium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(3 118)	4	L8672c99
55	Cs XLIII	+42	Cesium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(3 214)	4	L8672c99
55	Cs XLIV	+43	Cesium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(3 392)	4	L8672c99
55	Cs XLV	+44	Cesium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(3 485)	4	L8672c99
55	Cs XLVI	+45	Cesium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(7 989)	4	L8672c99
55	Cs XLVII	+46	Cesium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(8 224)	4	L8672c99
55	Cs XLVIII	+47	Cesium	O	1s²2s²2p⁴	(0,2)₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(8 484)	4	L8672c99
55	Cs XLIX	+48	Cesium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(8 726)	4	L8672c99
55	Cs L	+49	Cesium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(9 350)	4	L8672c99
55	Cs LI	+50	Cesium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(9 629)	4	L8672c99
55	Cs LII	+51	Cesium	Be	1s²2s²	¹S₀	2s ²S_1/2	(9 974)	4	L8672c99
55	Cs LIII	+52	Cesium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(10 208.78)	0.05	L16264c99
55	Cs LIV	+53	Cesium	He	1s²	¹S₀	1s ²S_1/2	(41 861.075)	0.017	L12128
55	Cs LV	+54	Cesium	H	1s	²S_¹/₂		(42 912.99)	0.05	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Ba (all spectra) 56 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
56	Ba I	0	Barium	Ba	[Xe]6s²	¹S₀	5s²5p⁶6s ²S_1/2	5.2116646	0.0000012	L6347,L9224
56	Ba II	+1	Barium	Cs	[Xe]6s	²S_¹/₂	5s²5p⁶ ¹S₀	10.003826	0.000012	L9224
56	Ba III	+2	Barium	Xe	[Cd]5p⁶	¹S₀	5s²5p⁵ ²P°_3/2	35.8438	0.0025	L3667
56	Ba IV	+3	Barium	I	[Cd]5p⁵	²P°_³/₂	5s²5p⁴ ³P₂	[47.0]	0.3	L11023
56	Ba V	+4	Barium	Te	[Cd]5p⁴	³P₂	5s²5p³ ⁴S°_3/2	(58.0)	1.9	L8672c99
56	Ba VI	+5	Barium	Sb	[Cd]5p³	⁴S°_³/₂	5s²5p² ³P₀	(71.0)	2.0	L8672c99
56	Ba VII	+6	Barium	Sn	[Cd]5p²	³P₀	5s²5p ²P°_1/2	(86.0)	2.0	L8672c99
56	Ba VIII	+7	Barium	In	[Cd]5p	²P°_¹/₂	5s² ¹S₀	(101.0)	2.1	L8672c99
56	Ba IX	+8	Barium	Cd	[Kr]4d¹⁰5s²	¹S₀	5s ²S_1/2	[130.5]	0.6	L6980
56	Ba X	+9	Barium	Ag	[Kr]4d¹⁰5s	²S_¹/₂	4d¹⁰ ¹S₀	[146.52]	0.12	L5438
56	Ba XI	+10	Barium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(241.0)	2.4	L8672c99
56	Ba XII	+11	Barium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(267.1)	2.5	L8672c99
56	Ba XIII	+12	Barium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(296)	3	L8672c99
56	Ba XIV	+13	Barium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(325)	3	L8672c99
56	Ba XV	+14	Barium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(354)	3	L8672c99
56	Ba XVI	+15	Barium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(390)	3	L8672c99
56	Ba XVII	+16	Barium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(422)	3	L8672c99
56	Ba XVIII	+17	Barium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(455)	3	L8672c99
56	Ba XIX	+18	Barium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(488)	3	L8672c99
56	Ba XX	+19	Barium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(520)	4	L8672c99
56	Ba XXI	+20	Barium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(646)	4	L8672c99
56	Ba XXII	+21	Barium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(679)	4	L8672c99
56	Ba XXIII	+22	Barium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(717)	4	L8672c99
56	Ba XXIV	+23	Barium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(752)	4	L8672c99
56	Ba XXV	+24	Barium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(809)	4	L8672c99
56	Ba XXVI	+25	Barium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(846)	4	L8672c99
56	Ba XXVII	+26	Barium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(935)	4	L8672c99
56	Ba XXVIII	+27	Barium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[976.62]	0.11	L5473
56	Ba XXIX	+28	Barium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(1 695)	4	L8672c99
56	Ba XXX	+29	Barium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(1 776)	4	L8672c99
56	Ba XXXI	+30	Barium	Fe	[Ar]3d⁸	(0,4)₄	3d⁷ ⁴F_9/2	(1 864)	4	L8672c99
56	Ba XXXII	+31	Barium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ⁵D₄	(1 958)	4	L8672c99
56	Ba XXXIII	+32	Barium	Cr	[Ar]3d⁶	⁵D₄	3d⁵ ⁶S_5/2	(2 047)	4	L8672c99
56	Ba XXXIV	+33	Barium	V	[Ar]3d⁵	⁶S_⁵/₂	3d⁴ ⁵D₀)	(2 142)	5	L8672c99
56	Ba XXXV	+34	Barium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(2 256)	5	L8672c99
56	Ba XXXVI	+35	Barium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(2 349)	5	L8672c99
56	Ba XXXVII	+36	Barium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(2 452)	5	L8672c99
56	Ba XXXVIII	+37	Barium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(2 547)	4	L8672c99
56	Ba XXXIX	+38	Barium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(2 814)	4	L8672c99
56	Ba XL	+39	Barium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(2 901)	4	L8672c99
56	Ba XLI	+40	Barium	S	[Ne]3s²3p⁴	³P₂	3p³ ⁴S°_3/2	(2 994)	4	L8672c99
56	Ba XLII	+41	Barium	P	[Ne]3s²3p³	⁴S°_³/₂	3p² ³P₀	(3 081)	4	L8672c99
56	Ba XLIII	+42	Barium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(3 266)	4	L8672c99
56	Ba XLIV	+43	Barium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(3 363)	4	L8672c99
56	Ba XLV	+44	Barium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(3 546)	4	L8672c99
56	Ba XLVI	+45	Barium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(3 640)	4	L8672c99
56	Ba XLVII	+46	Barium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(8 326)	4	L8672c99
56	Ba XLVIII	+47	Barium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(8 565)	4	L8672c99
56	Ba XLIX	+48	Barium	O	1s²2s²2p⁴	(0,2)₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(8 831)	4	L8672c99
56	Ba L	+49	Barium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(9 077)	4	L8672c99
56	Ba LI	+50	Barium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(9 739)	4	L8672c99
56	Ba LII	+51	Barium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(10 023)	4	L8672c99
56	Ba LIII	+52	Barium	Be	1s²2s²	¹S₀	2s ²S_1/2	(10 376)	4	L8672c99
56	Ba LIV	+53	Barium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(10 616.42)	0.05	L16264c99
56	Ba LV	+54	Barium	He	1s²	¹S₀	1s ²S_1/2	(43 485.366)	0.019	L12128
56	Ba LVI	+55	Barium	H	1s	²S_¹/₂		(44 561.47)	0.06	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data La (all spectra) 57 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
57	La I	0	Lanthanum	La	[Xe]5d6s²	²D_³/₂	5s²5p⁶5d² ³F₂	5.5769	0.0006	L3974,L16228
57	La II	+1	Lanthanum	Ba	[Xe]5d²	³F₂	5s²5p⁶5d ²D_3/2	11.18496	0.00006	L8469
57	La III	+2	Lanthanum	Cs	[Xe]5d	²D_³/₂	5s²5p⁶ ¹S₀	19.1773	0.0006	L3974,L3420
57	La IV	+3	Lanthanum	Xe	[Cd]5p⁶	¹S₀	5s²5p⁵ ²P°_3/2	[49.95]	0.06	L3974
57	La V	+4	Lanthanum	I	[Cd]5p⁵	²P°_³/₂	5s²5p⁴ ³P₂	[61.6]	0.6	L3974,L3749
57	La VI	+5	Lanthanum	Te	[Cd]5p⁴	³P₂	5s²5p³ ⁴S°_3/2	(74.0)	2.0	L8672c99
57	La VII	+6	Lanthanum	Sb	[Cd]5p³	⁴S°_³/₂	5s²5p² ³P₀	(88.0)	2.0	L8672c99
57	La VIII	+7	Lanthanum	Sn	[Cd]5p²	³P₀	5s²5p ²P°_1/2	(105.0)	2.1	L8672c99
57	La IX	+8	Lanthanum	In	[Cd]5p	²P°_¹/₂	5s² ¹S₀	(119.0)	2.2	L8672c99
57	La X	+9	Lanthanum	Cd	[Kr]4d¹⁰5s²	¹S₀	5s ²S_1/2	[151.4]	0.7	L6980
57	La XI	+10	Lanthanum	Ag	[Kr]4d¹⁰5s	²S_¹/₂	4d¹⁰ ¹S₀	[168.77]	0.12	L5438
57	La XII	+11	Lanthanum	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(275.0)	2.5	L8672c99
57	La XIII	+12	Lanthanum	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(303)	3	L8672c99
57	La XIV	+13	Lanthanum	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(332)	3	L8672c99
57	La XV	+14	Lanthanum	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(364)	3	L8672c99
57	La XVI	+15	Lanthanum	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(393)	3	L8672c99
57	La XVII	+16	Lanthanum	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(431)	3	L8672c99
57	La XVIII	+17	Lanthanum	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(464)	3	L8672c99
57	La XIX	+18	Lanthanum	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(498)	3	L8672c99
57	La XX	+19	Lanthanum	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(533)	4	L8672c99
57	La XXI	+20	Lanthanum	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(566)	4	L8672c99
57	La XXII	+21	Lanthanum	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(696)	4	L8672c99
57	La XXIII	+22	Lanthanum	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(731)	4	L8672c99
57	La XXIV	+23	Lanthanum	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(770)	4	L8672c99
57	La XXV	+24	Lanthanum	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(806)	4	L8672c99
57	La XXVI	+25	Lanthanum	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(865)	4	L8672c99
57	La XXVII	+26	Lanthanum	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(906)	4	L8672c99
57	La XXVIII	+27	Lanthanum	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(995)	4	L8672c99
57	La XXIX	+28	Lanthanum	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[1 039.09]	0.12	L5473
57	La XXX	+29	Lanthanum	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(1 800)	4	L8672c99
57	La XXXI	+30	Lanthanum	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(1 884)	4	L8672c99
57	La XXXII	+31	Lanthanum	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(1 974)	4	L8672c99
57	La XXXIII	+32	Lanthanum	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(2 069)	4	L8672c99
57	La XXXIV	+33	Lanthanum	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(2 162)	5	L8672c99
57	La XXXV	+34	Lanthanum	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(2 259)	5	L8672c99
57	La XXXVI	+35	Lanthanum	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(2 377)	5	L8672c99
57	La XXXVII	+36	Lanthanum	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(2 473)	5	L8672c99
57	La XXXVIII	+37	Lanthanum	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(2 577)	4	L8672c99
57	La XXXIX	+38	Lanthanum	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(2 674)	4	L8672c99
57	La XL	+39	Lanthanum	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(2 950)	4	L8672c99
57	La XLI	+40	Lanthanum	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(3 036)	4	L8672c99
57	La XLII	+41	Lanthanum	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(3 133)	4	L8672c99
57	La XLIII	+42	Lanthanum	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(3 222)	4	L8672c99
57	La XLIV	+43	Lanthanum	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(3 416)	4	L8672c99
57	La XLV	+44	Lanthanum	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(3 515)	4	L8672c99
57	La XLVI	+45	Lanthanum	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(3 704)	4	L8672c99
57	La XLVII	+46	Lanthanum	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(3 800)	4	L8672c99
57	La XLVIII	+47	Lanthanum	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(8 669)	4	L8672c99
57	La XLIX	+48	Lanthanum	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(8 914)	4	L8672c99
57	La L	+49	Lanthanum	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(9 184)	4	L8672c99
57	La LI	+50	Lanthanum	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(9 437)	4	L8672c99
57	La LII	+51	Lanthanum	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(10 136)	4	L8672c99
57	La LIII	+52	Lanthanum	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(10 426)	4	L8672c99
57	La LIV	+53	Lanthanum	Be	1s²2s²	¹S₀	2s ²S_1/2	(10 789)	5	L8672c99
57	La LV	+54	Lanthanum	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(11 033.40)	0.05	L16264c99
57	La LVI	+55	Lanthanum	He	1s²	¹S₀	1s ²S_1/2	(45 144.996)	0.022	L12128
57	La LVII	+56	Lanthanum	H	1s	²S_¹/₂		(46 245.60)	0.06	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Ce (all spectra) 58 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
58	Ce I	0	Cerium	Ce	[Xe]4f5d6s²	¹G°₄	4f5s²5p⁶5d² ⁴H°_7/2	5.5386	0.0004	L4277
58	Ce II	+1	Cerium	La	[Xe]4f5d²	⁴H°_⁷/₂	4f²5s²5p⁶ ³H₄	[10.956]	0.020	L19870c180
58	Ce III	+2	Cerium	Ba	[Xe]4f²	³H₄	4f5s²5p⁶ ²F°_5/2	[20.1974]	0.0025	L3974,L3420
58	Ce IV	+3	Cerium	Cs	[Xe]4f	²F°_⁵/₂	5s²5p⁶ ¹S₀	[36.906]	0.009	L14976
58	Ce V	+4	Cerium	Xe	[Cd]5p⁶	¹S₀	5s²5p⁵ ²P°_3/2	[65.55]	0.25	L3974
58	Ce VI	+5	Cerium	I	[Cd]5p⁵	²P°_³/₂	5s²5p⁴ ³P₂	[77.6]	1.2	L3974,L3749
58	Ce VII	+6	Cerium	Te	[Cd]5p⁴	³P₂	5s²5p³ ⁴S°_3/2	(91.0)	2.0	L8672c99
58	Ce VIII	+7	Cerium	Sb	[Cd]5p³	⁴S°_³/₂	5s²5p² ³P₀	(106.0)	2.1	L8672c99
58	Ce IX	+8	Cerium	Sn	[Cd]5p²	³P₀	5s²5p ²P°_1/2	(125.0)	2.2	L8672c99
58	Ce X	+9	Cerium	In	[Cd]5p	²P°_¹/₂	5s² ¹S₀	(140.0)	2.2	L8672c99
58	Ce XI	+10	Cerium	Cd	[Kr]4d¹⁰5s²	¹S₀	5s ²S_1/2	(172.0)	2.4	L8672c99
58	Ce XII	+11	Cerium	Ag	[Kr]4d¹⁰5s	²S_¹/₂	4d¹⁰ ¹S₀	[192.24]	0.12	L5532
58	Ce XIII	+12	Cerium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(312)	3	L8672c99
58	Ce XIV	+13	Cerium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(340)	3	L8672c99
58	Ce XV	+14	Cerium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(371)	3	L8672c99
58	Ce XVI	+15	Cerium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(403)	3	L8672c99
58	Ce XVII	+16	Cerium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(435)	3	L8672c99
58	Ce XVIII	+17	Cerium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(472)	3	L8672c99
58	Ce XIX	+18	Cerium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(509)	3	L8672c99
58	Ce XX	+19	Cerium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(543)	4	L8672c99
58	Ce XXI	+20	Cerium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(579)	4	L8672c99
58	Ce XXII	+21	Cerium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(613)	4	L8672c99
58	Ce XXIII	+22	Cerium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(749)	4	L8672c99
58	Ce XXIV	+23	Cerium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(785)	4	L8672c99
58	Ce XXV	+24	Cerium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(824)	4	L8672c99
58	Ce XXVI	+25	Cerium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(862)	4	L8672c99
58	Ce XXVII	+26	Cerium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(924)	4	L8672c99
58	Ce XXVIII	+27	Cerium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(965)	4	L8672c99
58	Ce XXIX	+28	Cerium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(1 060)	4	L8672c99
58	Ce XXX	+29	Cerium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[1 103.5]	0.5	L10278
58	Ce XXXI	+30	Cerium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(1 908)	4	L8672c99
58	Ce XXXII	+31	Cerium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(1 994)	4	L8672c99
58	Ce XXXIII	+32	Cerium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(2 087)	4	L8672c99
58	Ce XXXIV	+33	Cerium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(2 185)	5	L8672c99
58	Ce XXXV	+34	Cerium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(2 280)	5	L8672c99
58	Ce XXXVI	+35	Cerium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(2 378)	5	L8672c99
58	Ce XXXVII	+36	Cerium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(2 500)	5	L8672c99
58	Ce XXXVIII	+37	Cerium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(2 600)	4	L8672c99
58	Ce XXXIX	+38	Cerium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(2 706)	4	L8672c99
58	Ce XL	+39	Cerium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(2 806)	4	L8672c99
58	Ce XLI	+40	Cerium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(3 087)	4	L8672c99
58	Ce XLII	+41	Cerium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(3 176)	4	L8672c99
58	Ce XLIII	+42	Cerium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(3 274)	4	L8672c99
58	Ce XLIV	+43	Cerium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(3 366)	4	L8672c99
58	Ce XLV	+44	Cerium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(3 570)	4	L8672c99
58	Ce XLVI	+45	Cerium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(3 672)	4	L8672c99
58	Ce XLVII	+46	Cerium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(3 865)	4	L8672c99
58	Ce XLVIII	+47	Cerium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(3 963)	4	L8672c99
58	Ce XLIX	+48	Cerium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(9 020)	4	L8672c99
58	Ce L	+49	Cerium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(9 269)	4	L8672c99
58	Ce LI	+50	Cerium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(9 545)	4	L8672c99
58	Ce LII	+51	Cerium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(9 803)	4	L8672c99
58	Ce LIII	+52	Cerium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(10 542)	4	L8672c99
58	Ce LIV	+53	Cerium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(10 840)	5	L8672c99
58	Ce LV	+54	Cerium	Be	1s²2s²	¹S₀	2s ²S_1/2	(11 210)	5	L8672c99
58	Ce LVI	+55	Cerium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(11 459.85)	0.06	L16264c99
58	Ce LVII	+56	Cerium	He	1s²	¹S₀	1s ²S_1/2	(46 840.306)	0.024	L12128
58	Ce LVIII	+57	Cerium	H	1s	²S_¹/₂		(47 965.72)	0.06	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Pr (all spectra) 59 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
59	Pr I	0	Praseodymium	Pr	[Xe]4f³6s²	⁴I°_⁹/₂	4f³(⁴I°)6s (9/2,1/2)°₄	[5.4702]	0.0004	L19006
59	Pr II	+1	Praseodymium	Ce	[Xe]4f³6s	(⁹/₂,¹/₂)°₄	4f³5s²5p⁶ ⁴I°_9/2	[10.631]	0.020	L19870c180
59	Pr III	+2	Praseodymium	La	[Xe]4f³	⁴I°_⁹/₂	4f²5s²5p⁶ ³H₄	21.6237	0.0025	L3974,L3420
59	Pr IV	+3	Praseodymium	Ba	[Xe]4f²	³H₄	4f5s²5p⁶ ²F°_5/2	[38.981]	0.025	L3974,L3420
59	Pr V	+4	Praseodymium	Cs	[Xe]4f	²F°_⁵/₂	5s²5p⁶ ¹S₀	[57.53]	0.05	L3974,L4095
59	Pr VI	+5	Praseodymium	Xe	[Cd]5p⁶	¹S₀	4f5s²5p⁴°	(82)	4	L582
59	Pr VII	+6	Praseodymium	I	[Cd]4f5p⁴	°	4f5s²5p³	(97)	5	L582
59	Pr VIII	+7	Praseodymium	Te	[Cd]4f5p³		4f5s²5p²°	(112)	6	L582
59	Pr IX	+8	Praseodymium	Sb	[Cd]4f5p²	°	5s²4f²	(131)	7	L582
59	Pr X	+9	Praseodymium	Sn	[Cd]4f²		5s²5p ²P°_1/2	(148)	7	L582
59	Pr XI	+10	Praseodymium	In	[Cd]5p	²P°_¹/₂	5s² ¹S₀	(162.0)	2.4	L8672c99
59	Pr XII	+11	Praseodymium	Cd	[Kr]4d¹⁰5s²	¹S₀	5s ²S_1/2	(196.0)	2.5	L8672c99
59	Pr XIII	+12	Praseodymium	Ag	[Kr]4d¹⁰5s	²S_¹/₂	4d¹⁰ ¹S₀	[217.02]	0.12	L5532
59	Pr XIV	+13	Praseodymium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(350)	3	L8672c99
59	Pr XV	+14	Praseodymium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(378)	3	L8672c99
59	Pr XVI	+15	Praseodymium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(412)	3	L8672c99
59	Pr XVII	+16	Praseodymium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(445)	3	L8672c99
59	Pr XVIII	+17	Praseodymium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(478)	3	L8672c99
59	Pr XIX	+18	Praseodymium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(516)	3	L8672c99
59	Pr XX	+19	Praseodymium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(554)	4	L8672c99
59	Pr XXI	+20	Praseodymium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(590)	4	L8672c99
59	Pr XXII	+21	Praseodymium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(627)	4	L8672c99
59	Pr XXIII	+22	Praseodymium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(663)	4	L8672c99
59	Pr XXIV	+23	Praseodymium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(803)	4	L8672c99
59	Pr XXV	+24	Praseodymium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(840)	4	L8672c99
59	Pr XXVI	+25	Praseodymium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(880)	4	L8672c99
59	Pr XXVII	+26	Praseodymium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(920)	4	L8672c99
59	Pr XXVIII	+27	Praseodymium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(985)	4	L8672c99
59	Pr XXIX	+28	Praseodymium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(1 028)	4	L8672c99
59	Pr XXX	+29	Praseodymium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(1 124)	4	L8672c99
59	Pr XXXI	+30	Praseodymium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[1 169.9]	0.6	L10278
59	Pr XXXII	+31	Praseodymium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(2 019)	4	L8672c99
59	Pr XXXIII	+32	Praseodymium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(2 108)	4	L8672c99
59	Pr XXXIV	+33	Praseodymium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(2 202)	5	L8672c99
59	Pr XXXV	+34	Praseodymium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(2 304)	5	L8672c99
59	Pr XXXVI	+35	Praseodymium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(2 400)	5	L8672c99
59	Pr XXXVII	+36	Praseodymium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(2 501)	5	L8672c99
59	Pr XXXVIII	+37	Praseodymium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(2 628)	4	L8672c99
59	Pr XXXIX	+38	Praseodymium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(2 729)	4	L8672c99
59	Pr XL	+39	Praseodymium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(2 838)	4	L8672c99
59	Pr XLI	+40	Praseodymium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(2 941)	4	L8672c99
59	Pr XLII	+41	Praseodymium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(3 227)	4	L8672c99
59	Pr XLIII	+42	Praseodymium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(3 319)	4	L8672c99
59	Pr XLIV	+43	Praseodymium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(3 419)	4	L8672c99
59	Pr XLV	+44	Praseodymium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(3 512)	4	L8672c99
59	Pr XLVI	+45	Praseodymium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(3 729)	4	L8672c99
59	Pr XLVII	+46	Praseodymium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(3 832)	4	L8672c99
59	Pr XLVIII	+47	Praseodymium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(4 030)	4	L8672c99
59	Pr XLIX	+48	Praseodymium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(4 130)	4	L8672c99
59	Pr L	+49	Praseodymium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(9 378)	4	L8672c99
59	Pr LI	+50	Praseodymium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(9 632)	4	L8672c99
59	Pr LII	+51	Praseodymium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(9 913)	4	L8672c99
59	Pr LIII	+52	Praseodymium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(10 175)	4	L8672c99
59	Pr LIV	+53	Praseodymium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(10 959)	5	L8672c99
59	Pr LV	+54	Praseodymium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(11 262)	5	L8672c99
59	Pr LVI	+55	Praseodymium	Be	1s²2s²	¹S₀	2s ²S_1/2	(11 641)	5	L8672c99
59	Pr LVII	+56	Praseodymium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(11 895.89)	0.06	L16264c99
59	Pr LVIII	+57	Praseodymium	He	1s²	¹S₀	1s ²S_1/2	(48 571.71)	0.03	L12128
59	Pr LIX	+58	Praseodymium	H	1s	²S_¹/₂		(49 722.25)	0.07	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Nd (all spectra) 60 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
60	Nd I	0	Neodymium	Nd	[Xe]4f⁴6s²	⁵I₄	4f⁴5s²5p⁶6s ⁶I°_7/2	5.5250	0.0006	L4277
60	Nd II	+1	Neodymium	Pr	[Xe]4f⁴6s	⁶I_⁷/₂	4f⁴5s²5p⁶ ⁵I₄	[10.783]	0.020	L19870c180
60	Nd III	+2	Neodymium	Ce	[Xe]4f⁴	⁵I₄	4f³5s²5p⁶ ⁴I°_9/2	[22.09]	0.04	L19883c180
60	Nd IV	+3	Neodymium	La	[Xe]4f³	⁴I°_⁹/₂	4f²5s²5p⁶ ³H₄	[40.60]	0.04	L19883c180
60	Nd V	+4	Neodymium	Ba	[Xe]4f²	³H₄	4f²5s²5p⁵°	[60.0]	0.3	L4095
60	Nd VI	+5	Neodymium	Cs	[Cd]4f²5p⁵	°	4f²5s²5p⁴	(84)	4	L582
60	Nd VII	+6	Neodymium	Xe	[Cd]4f²5p⁴		4f²5s²5p³°	(99)	5	L582
60	Nd VIII	+7	Neodymium	I	[Cd]4f²5p³	°	4f²5s²5p²	(114)	6	L582
60	Nd IX	+8	Neodymium	Te	[Cd]4f²5p²		4f²5s²5p°	(136)	7	L582
60	Nd X	+9	Neodymium	Sb	[Cd]4f²5p	°	5s²4f²	(152)	8	L582
60	Nd XI	+10	Neodymium	Sn	[Cd]4f²		5s²4f ²F°_5/2	(168)	8	L582
60	Nd XII	+11	Neodymium	In	[Cd]4f	²F°_⁵/₂	5s² ¹S₀	(195)	10	L582
60	Nd XIII	+12	Neodymium	Cd	[Kr]4d¹⁰5s²	¹S₀	5s ²S_1/2	(221)	3	L8672c99
60	Nd XIV	+13	Neodymium	Ag	[Kr]4d¹⁰5s	²S_¹/₂	4d¹⁰ ¹S₀	[243.00]	0.20	L5532
60	Nd XV	+14	Neodymium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(389)	3	L8672c99
60	Nd XVI	+15	Neodymium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(420)	3	L8672c99
60	Nd XVII	+16	Neodymium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(453)	3	L8672c99
60	Nd XVIII	+17	Neodymium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(489)	3	L8672c99
60	Nd XIX	+18	Neodymium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(522)	3	L8672c99
60	Nd XX	+19	Neodymium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(562)	4	L8672c99
60	Nd XXI	+20	Neodymium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(602)	4	L8672c99
60	Nd XXII	+21	Neodymium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(638)	4	L8672c99
60	Nd XXIII	+22	Neodymium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(678)	4	L8672c99
60	Nd XXIV	+23	Neodymium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(714)	4	L8672c99
60	Nd XXV	+24	Neodymium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(859)	4	L8672c99
60	Nd XXVI	+25	Neodymium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(896)	4	L8672c99
60	Nd XXVII	+26	Neodymium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(939)	4	L8672c99
60	Nd XXVIII	+27	Neodymium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(978)	4	L8672c99
60	Nd XXIX	+28	Neodymium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(1 049)	4	L8672c99
60	Nd XXX	+29	Neodymium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(1 092)	4	L8672c99
60	Nd XXXI	+30	Neodymium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(1 191)	4	L8672c99
60	Nd XXXII	+31	Neodymium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[1 238.42]	0.17	L5473
60	Nd XXXIII	+32	Neodymium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(2 134)	4	L8672c99
60	Nd XXXIV	+33	Neodymium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(2 224)	5	L8672c99
60	Nd XXXV	+34	Neodymium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(2 321)	5	L8672c99
60	Nd XXXVI	+35	Neodymium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(2 425)	5	L8672c99
60	Nd XXXVII	+36	Neodymium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(2 525)	5	L8672c99
60	Nd XXXVIII	+37	Neodymium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(2 627)	4	L8672c99
60	Nd XXXIX	+38	Neodymium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(2 758)	4	L8672c99
60	Nd XL	+39	Neodymium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(2 861)	4	L8672c99
60	Nd XLI	+40	Neodymium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(2 974)	4	L8672c99
60	Nd XLII	+41	Neodymium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(3 078)	4	L8672c99
60	Nd XLIII	+42	Neodymium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(3 371)	4	L8672c99
60	Nd XLIV	+43	Neodymium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(3 465)	4	L8672c99
60	Nd XLV	+44	Neodymium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(3 567)	4	L8672c99
60	Nd XLVI	+45	Neodymium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(3 662)	4	L8672c99
60	Nd XLVII	+46	Neodymium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(3 891)	4	L8672c99
60	Nd XLVIII	+47	Neodymium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(3 997)	4	L8672c99
60	Nd XLIX	+48	Neodymium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(4 198)	4	L8672c99
60	Nd L	+49	Neodymium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(4 302)	4	L8672c99
60	Nd LI	+50	Neodymium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(9 742)	4	L8672c99
60	Nd LII	+51	Neodymium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(10 002)	4	L8672c99
60	Nd LIII	+52	Neodymium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(10 288)	4	L8672c99
60	Nd LIV	+53	Neodymium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(10 555)	5	L8672c99
60	Nd LV	+54	Neodymium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(11 384)	5	L8672c99
60	Nd LVI	+55	Neodymium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(11 694)	5	L8672c99
60	Nd LVII	+56	Neodymium	Be	1s²2s²	¹S₀	2s ²S_1/2	(12 082)	5	L8672c99
60	Nd LVIII	+57	Neodymium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(12 341.66)	0.07	L16264c99
60	Nd LIX	+58	Neodymium	He	1s²	¹S₀	1s ²S_1/2	(50 339.59)	0.03	L12128
60	Nd LX	+59	Neodymium	H	1s	²S_¹/₂		(51 515.58)	0.07	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Pm (all spectra) 61 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
61	Pm I	0	Promethium	Pm	[Xe]4f⁵6s²	⁶H°_⁵/₂	4f⁵5s²5p⁶6s ⁷H°₂	[5.577]	0.017	L19006
61	Pm II	+1	Promethium	Nd	[Xe]4f⁵6s	⁷H°₂	4f⁵5s²5p⁶ ⁶H°_5/2	[10.938]	0.020	L19870c180
61	Pm III	+2	Promethium	Pr	[Xe]4f⁵	⁶H°_⁵/₂	4f⁴5s²5p⁶ ⁵I₄	[22.44]	0.08	L19883c180
61	Pm IV	+3	Promethium	Ce	[Xe]4f⁴	⁵I₄	4f³5s²5p⁶ ⁴I°_9/2	[41.17]	0.09	L19883c180
61	Pm V	+4	Promethium	La	[Xe]4f³	⁴I°_⁹/₂	4f³5s²5p⁵	[61.7]	0.3	L4095
61	Pm VI	+5	Promethium	Ba	[Cd]4f³5p⁵		4f³5s²5p⁴°	(85)	4	L582
61	Pm VII	+6	Promethium	Cs	[Cd]4f³5p⁴	°	4f³5s²5p³	(101)	5	L582
61	Pm VIII	+7	Promethium	Xe	[Cd]4f³5p³		4f³5s²5p²°	(116)	6	L582
61	Pm IX	+8	Promethium	I	[Cd]4f³5p²	°	4f³5s²5p	(138)	7	L582
61	Pm X	+9	Promethium	Te	[Cd]4f³5p		4f³5s²°	(155)	8	L582
61	Pm XI	+10	Promethium	Sb	[Cd]4f³	°	5s²4f²	(174)	9	L582
61	Pm XII	+11	Promethium	Sn	[Cd]4f²		5s²4f ²F°_5/2	(202)	10	L582
61	Pm XIII	+12	Promethium	In	[Cd]4f	²F°_⁵/₂	5s² ¹S₀	(229)	11	L582
61	Pm XIV	+13	Promethium	Cd	[Kr]4d¹⁰5s²	¹S₀	5s ²S_1/2	(248)	3	L8672c99
61	Pm XV	+14	Promethium	Ag	[Kr]4d¹⁰5s	²S_¹/₂	4d¹⁰ ¹S₀	(269)	3	L8672c99
61	Pm XVI	+15	Promethium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(430)	3	L8672c99
61	Pm XVII	+16	Promethium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(462)	3	L8672c99
61	Pm XVIII	+17	Promethium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(497)	3	L8672c99
61	Pm XIX	+18	Promethium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(534)	3	L8672c99
61	Pm XX	+19	Promethium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(569)	4	L8672c99
61	Pm XXI	+20	Promethium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(609)	4	L8672c99
61	Pm XXII	+21	Promethium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(651)	4	L8672c99
61	Pm XXIII	+22	Promethium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(689)	4	L8672c99
61	Pm XXIV	+23	Promethium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(730)	4	L8672c99
61	Pm XXV	+24	Promethium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(767)	4	L8672c99
61	Pm XXVI	+25	Promethium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(916)	4	L8672c99
61	Pm XXVII	+26	Promethium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(956)	4	L8672c99
61	Pm XXVIII	+27	Promethium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(998)	4	L8672c99
61	Pm XXIX	+28	Promethium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(1 040)	4	L8672c99
61	Pm XXX	+29	Promethium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(1 113)	4	L8672c99
61	Pm XXXI	+30	Promethium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(1 158)	4	L8672c99
61	Pm XXXII	+31	Promethium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(1 261)	4	L8672c99
61	Pm XXXIII	+32	Promethium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[1 308.7]	0.6	L10278
61	Pm XXXIV	+33	Promethium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(2 251)	5	L8672c99
61	Pm XXXV	+34	Promethium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(2 344)	5	L8672c99
61	Pm XXXVI	+35	Promethium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(2 443)	5	L8672c99
61	Pm XXXVII	+36	Promethium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(2 549)	5	L8672c99
61	Pm XXXVIII	+37	Promethium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(2 652)	4	L8672c99
61	Pm XXXIX	+38	Promethium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(2 755)	4	L8672c99
61	Pm XL	+39	Promethium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(2 892)	4	L8672c99
61	Pm XLI	+40	Promethium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(2 997)	4	L8672c99
61	Pm XLII	+41	Promethium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(3 112)	4	L8672c99
61	Pm XLIII	+42	Promethium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(3 219)	4	L8672c99
61	Pm XLIV	+43	Promethium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(3 519)	4	L8672c99
61	Pm XLV	+44	Promethium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(3 613)	4	L8672c99
61	Pm XLVI	+45	Promethium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(3 718)	4	L8672c99
61	Pm XLVII	+46	Promethium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(3 816)	4	L8672c99
61	Pm XLVIII	+47	Promethium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(4 056)	4	L8672c99
61	Pm XLIX	+48	Promethium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(4 166)	4	L8672c99
61	Pm L	+49	Promethium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(4 371)	4	L8672c99
61	Pm LI	+50	Promethium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(4 476)	4	L8672c99
61	Pm LII	+51	Promethium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(10 115)	4	L8672c99
61	Pm LIII	+52	Promethium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(10 378)	4	L8672c99
61	Pm LIV	+53	Promethium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(10 671)	5	L8672c99
61	Pm LV	+54	Promethium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(10 942)	5	L8672c99
61	Pm LVI	+55	Promethium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(11 819)	5	L8672c99
61	Pm LVII	+56	Promethium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(12 136)	5	L8672c99
61	Pm LVIII	+57	Promethium	Be	1s²2s²	¹S₀	2s ²S_1/2	(12 532)	6	L8672c99
61	Pm LIX	+58	Promethium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(12 797.26)	0.07	L16264c99
61	Pm LX	+59	Promethium	He	1s²	¹S₀	1s ²S_1/2	(52 144.29)	0.12	L12128
61	Pm LXI	+60	Promethium	H	1s	²S_¹/₂		(53 346.10)	0.15	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Sm (all spectra) 62 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
62	Sm I	0	Samarium	Sm	[Xe]4f⁶6s²	⁷F₀	4f⁶5s²5p⁶6s ⁸F_1/2	5.64371	0.00017	L9734
62	Sm II	+1	Samarium	Pm	[Xe]4f⁶6s	⁸F_¹/₂	4f⁶5s²5p⁶ ⁷F₀	[11.078]	0.020	L19870c180
62	Sm III	+2	Samarium	Nd	[Xe]4f⁶	⁷F₀	4f⁵5s²5p⁶ ⁶H°_5/2	[23.55]	0.08	L19883c180
62	Sm IV	+3	Samarium	Pr	[Xe]4f⁵	⁶H°_⁵/₂	4f⁴5s²5p⁶ ⁵I₄	[41.64]	0.11	L19883c180
62	Sm V	+4	Samarium	Ce	[Xe]4f⁴	⁵I₄	4f³5s²5p⁶ ⁴I°_9/2	[62.7]	0.4	L4095
62	Sm VI	+5	Samarium	La	[Xe]4f³	⁴I°_⁹/₂	4f⁴5s²5p⁴	(87)	4	L582
62	Sm VII	+6	Samarium	Ba	[Cd]4f⁴5p⁴		4f⁴5s²5p³°	(103)	5	L582
62	Sm VIII	+7	Samarium	Cs	[Cd]4f⁴5p³	°	4f⁴5s²5p²	(118)	6	L582
62	Sm IX	+8	Samarium	Xe	[Cd]4f⁴5p²		4f⁴5s²5p°	(141)	7	L582
62	Sm X	+9	Samarium	I	[Cd]4f⁴5p	°	4f⁴5s²	(158)	8	L582
62	Sm XI	+10	Samarium	Te	[Cd]4f⁴		4f³5s²°	(179)	9	L582
62	Sm XII	+11	Samarium	Sb	[Cd]4f³	°	5s²4f²	(208)	10	L582
62	Sm XIII	+12	Samarium	Sn	[Cd]4f²		5s²4f ²F°_5/2	(237)	12	L582
62	Sm XIV	+13	Samarium	In	[Cd]4f	²F°_⁵/₂	4f5s°	(257)	12	L582
62	Sm XV	+14	Samarium	Cd	[Kr]4d¹⁰4f5s	°	4f ²F°_5/2	(276)	14	L582
62	Sm XVI	+15	Samarium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	[306.5]	0.5	L5532
62	Sm XVII	+16	Samarium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(474)	3	L8672c99
62	Sm XVIII	+17	Samarium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(506)	3	L8672c99
62	Sm XIX	+18	Samarium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(543)	3	L8672c99
62	Sm XX	+19	Samarium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(581)	4	L8672c99
62	Sm XXI	+20	Samarium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(617)	4	L8672c99
62	Sm XXII	+21	Samarium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(658)	4	L8672c99
62	Sm XXIII	+22	Samarium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(702)	4	L8672c99
62	Sm XXIV	+23	Samarium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(742)	4	L8672c99
62	Sm XXV	+24	Samarium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(782)	4	L8672c99
62	Sm XXVI	+25	Samarium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(822)	4	L8672c99
62	Sm XXVII	+26	Samarium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(976)	4	L8672c99
62	Sm XXVIII	+27	Samarium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(1 016)	4	L8672c99
62	Sm XXIX	+28	Samarium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(1 060)	4	L8672c99
62	Sm XXX	+29	Samarium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(1 103)	4	L8672c99
62	Sm XXXI	+30	Samarium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(1 180)	4	L8672c99
62	Sm XXXII	+31	Samarium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(1 226)	4	L8672c99
62	Sm XXXIII	+32	Samarium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(1 332)	4	L8672c99
62	Sm XXXIV	+33	Samarium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[1 381.56]	0.21	L10191
62	Sm XXXV	+34	Samarium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(2 371)	5	L8672c99
62	Sm XXXVI	+35	Samarium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(2 466)	5	L8672c99
62	Sm XXXVII	+36	Samarium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(2 569)	5	L8672c99
62	Sm XXXVIII	+37	Samarium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(2 676)	4	L8672c99
62	Sm XXXIX	+38	Samarium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(2 782)	4	L8672c99
62	Sm XL	+39	Samarium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(2 887)	4	L8672c99
62	Sm XLI	+40	Samarium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(3 028)	4	L8672c99
62	Sm XLII	+41	Samarium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(3 137)	4	L8672c99
62	Sm XLIII	+42	Samarium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(3 253)	4	L8672c99
62	Sm XLIV	+43	Samarium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(3 363)	4	L8672c99
62	Sm XLV	+44	Samarium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(3 669)	4	L8672c99
62	Sm XLVI	+45	Samarium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(3 766)	4	L8672c99
62	Sm XLVII	+46	Samarium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(3 873)	4	L8672c99
62	Sm XLVIII	+47	Samarium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(3 971)	4	L8672c99
62	Sm XLIX	+48	Samarium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(4 227)	4	L8672c99
62	Sm L	+49	Samarium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(4 337)	4	L8672c99
62	Sm LI	+50	Samarium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(4 548)	4	L8672c99
62	Sm LII	+51	Samarium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(4 655)	4	L8672c99
62	Sm LIII	+52	Samarium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(10 494)	4	L8672c99
62	Sm LIV	+53	Samarium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(10 762)	5	L8672c99
62	Sm LV	+54	Samarium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(11 060)	5	L8672c99
62	Sm LVI	+55	Samarium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(11 337)	5	L8672c99
62	Sm LVII	+56	Samarium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(12 264)	5	L8672c99
62	Sm LVIII	+57	Samarium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(12 588)	6	L8672c99
62	Sm LIX	+58	Samarium	Be	1s²2s²	¹S₀	2s ²S_1/2	(12 992)	6	L8672c99
62	Sm LX	+59	Samarium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(13 262.85)	0.09	L16264c99
62	Sm LXI	+60	Samarium	He	1s²	¹S₀	1s ²S_1/2	(53 986.12)	0.04	L12128
62	Sm LXII	+61	Samarium	H	1s	²S_¹/₂		(55 214.23)	0.20	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Eu (all spectra) 63 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
63	Eu I	0	Europium	Eu	[Xe]4f⁷6s²	⁸S°_⁷/₂	4f⁷5p⁶6s ⁹S°₄	5.670385	0.000005	L13382
63	Eu II	+1	Europium	Sm	[Xe]4f⁷6s	⁹S°₄	4f⁷5s²5p⁶ ⁸S°_7/2	[11.240]	0.006	L19870
63	Eu III	+2	Europium	Pm	[Xe]4f⁷	⁸S°_⁷/₂	4f⁶5s²5p⁶ ⁷F₀	[24.84]	0.03	L19883c180
63	Eu IV	+3	Europium	Nd	[Xe]4f⁶	⁷F₀	4f⁵5s²5p⁶ ⁶H°_5/2	[42.94]	0.11	L19883c180
63	Eu V	+4	Europium	Pr	[Xe]4f⁵	⁶H°_⁵/₂	4f⁵5s²5p⁵	[63.2]	0.4	L4095
63	Eu VI	+5	Europium	Ce	[Cd]4f⁵5p⁵		4f⁵5s²5p⁴°	(89)	4	L582
63	Eu VII	+6	Europium	La	[Cd]4f⁵5p⁴	°	4f⁵5s²5p³	(105)	5	L582
63	Eu VIII	+7	Europium	Ba	[Cd]4f⁵5p³		4f⁵5s²5p²°	(120)	6	L582
63	Eu IX	+8	Europium	Cs	[Cd]4f⁵5p²	°	4f⁵5s²5p	(144)	7	L582
63	Eu X	+9	Europium	Xe	[Cd]4f⁵5p		4f⁵5s²°	(161)	8	L582
63	Eu XI	+10	Europium	I	[Cd]4f⁵	°	4f⁴5s²	(183)	9	L582
63	Eu XII	+11	Europium	Te	[Cd]4f⁴		4f³5s²°	(213)	11	L582
63	Eu XIII	+12	Europium	Sb	[Cd]4f³	°	5s²4f²	(243)	12	L582
63	Eu XIV	+13	Europium	Sn	[Cd]4f²		4f²5s	(263)	14	L582
63	Eu XV	+14	Europium	In	[Kr]4d¹⁰4f²5s		4f² ³H₄	(281)	14	L582
63	Eu XVI	+15	Europium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(311)	16	L582
63	Eu XVII	+16	Europium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	[344.4]	0.5	L5532
63	Eu XVIII	+17	Europium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(518)	3	L8672c99
63	Eu XIX	+18	Europium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(553)	3	L8672c99
63	Eu XX	+19	Europium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(590)	4	L8672c99
63	Eu XXI	+20	Europium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(630)	4	L8672c99
63	Eu XXII	+21	Europium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(667)	4	L8672c99
63	Eu XXIII	+22	Europium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(709)	4	L8672c99
63	Eu XXIV	+23	Europium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(755)	4	L8672c99
63	Eu XXV	+24	Europium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(795)	4	L8672c99
63	Eu XXVI	+25	Europium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(838)	4	L8672c99
63	Eu XXVII	+26	Europium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(879)	4	L8672c99
63	Eu XXVIII	+27	Europium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(1 037)	4	L8672c99
63	Eu XXIX	+28	Europium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(1 078)	4	L8672c99
63	Eu XXX	+29	Europium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(1 124)	4	L8672c99
63	Eu XXXI	+30	Europium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(1 167)	4	L8672c99
63	Eu XXXII	+31	Europium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(1 249)	4	L8672c99
63	Eu XXXIII	+32	Europium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(1 296)	4	L8672c99
63	Eu XXXIV	+33	Europium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(1 406)	5	L8672c99
63	Eu XXXV	+34	Europium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[1 456.06]	0.25	L10191
63	Eu XXXVI	+35	Europium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(2 495)	5	L8672c99
63	Eu XXXVII	+36	Europium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(2 591)	5	L8672c99
63	Eu XXXVIII	+37	Europium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(2 697)	4	L8672c99
63	Eu XXXIX	+38	Europium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(2 807)	4	L8672c99
63	Eu XL	+39	Europium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(2 914)	4	L8672c99
63	Eu XLI	+40	Europium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(3 022)	4	L8672c99
63	Eu XLII	+41	Europium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(3 168)	4	L8672c99
63	Eu XLIII	+42	Europium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(3 279)	4	L8672c99
63	Eu XLIV	+43	Europium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(3 398)	4	L8672c99
63	Eu XLV	+44	Europium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(3 510)	4	L8672c99
63	Eu XLVI	+45	Europium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(3 823)	4	L8672c99
63	Eu XLVII	+46	Europium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(3 921)	4	L8672c99
63	Eu XLVIII	+47	Europium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(4 031)	4	L8672c99
63	Eu XLIX	+48	Europium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(4 131)	4	L8672c99
63	Eu L	+49	Europium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(4 400)	4	L8672c99
63	Eu LI	+50	Europium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(4 513)	4	L8672c99
63	Eu LII	+51	Europium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(4 729)	4	L8672c99
63	Eu LIII	+52	Europium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(4 838)	4	L8672c99
63	Eu LIV	+53	Europium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(10 880)	5	L8672c99
63	Eu LV	+54	Europium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(11 153)	5	L8672c99
63	Eu LVI	+55	Europium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(11 457)	5	L8672c99
63	Eu LVII	+56	Europium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(11 739)	5	L8672c99
63	Eu LVIII	+57	Europium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(12 718)	6	L8672c99
63	Eu LIX	+58	Europium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(13 050)	6	L8672c99
63	Eu LX	+59	Europium	Be	1s²2s²	¹S₀	2s ²S_1/2	(13 462)	7	L8672c99
63	Eu LXI	+60	Europium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(13 738.58)	0.09	L16264c99
63	Eu LXII	+61	Europium	He	1s²	¹S₀	1s ²S_1/2	(55 865.92)	0.04	L12128
63	Eu LXIII	+62	Europium	H	1s	²S_¹/₂		(57 120.64)	0.19	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Gd (all spectra) 64 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
64	Gd I	0	Gadolinium	Gd	[Xe]4f⁷5d6s²	⁹D°₂	4f⁷5d6s ¹⁰D°_5/2	6.14980	0.00004	L11798
64	Gd II	+1	Gadolinium	Eu	[Xe]4f⁷5d6s	¹⁰D°_⁵/₂	4f⁷5p⁶5d ⁹D°₂	[12.076]	0.020	L19870c180
64	Gd III	+2	Gadolinium	Sm	[Xe]4f⁷5d	⁹D°₂	4f⁷5s²5p⁶ ⁸S°_7/2	[20.54]	0.03	L19883c180
64	Gd IV	+3	Gadolinium	Pm	[Xe]4f⁷	⁸S°_⁷/₂	4f⁶5s²5p⁶ ⁷F₀	[44.44]	0.08	L19883c180
64	Gd V	+4	Gadolinium	Nd	[Xe]4f⁶	⁷F₀	4f⁶5s²5p⁵°	[64.8]	0.4	L4095
64	Gd VI	+5	Gadolinium	Pr	[Cd]4f⁶5p⁵	°	4f⁶5s²5p⁴	(89)	4	L582
64	Gd VII	+6	Gadolinium	Ce	[Cd]4f⁶5p⁴		4f⁶5s²5p³°	(106)	5	L582
64	Gd VIII	+7	Gadolinium	La	[Cd]4f⁶5p³	°	4f⁶5s²5p²	(123)	6	L582
64	Gd IX	+8	Gadolinium	Ba	[Cd]4f⁶5p²		4f⁵5s²5p²°	(144)	7	L582
64	Gd X	+9	Gadolinium	Cs	[Cd]4f⁵5p²	°	4f⁵5s²5p	(165)	8	L582
64	Gd XI	+10	Gadolinium	Xe	[Cd]4f⁵5p		4f⁵5s²°	(183)	9	L582
64	Gd XII	+11	Gadolinium	I	[Cd]4f⁵	°	4f⁴5s²	(213)	11	L582
64	Gd XIII	+12	Gadolinium	Te	[Cd]4f⁴		4f⁵ ⁶H°_5/2	(246)	12	L582
64	Gd XIV	+13	Gadolinium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	5s²4f²	(268)	14	L582
64	Gd XV	+14	Gadolinium	Sn	[Cd]4f²		4f³ ⁴I°_9/2	(288)	15	L582
64	Gd XVI	+15	Gadolinium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(319)	16	L582
64	Gd XVII	+16	Gadolinium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(352)	17	L582
64	Gd XVIII	+17	Gadolinium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(384.4)	2.5	L582c99
64	Gd XIX	+18	Gadolinium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(565)	3	L8672c99
64	Gd XX	+19	Gadolinium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(601)	4	L8672c99
64	Gd XXI	+20	Gadolinium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(639)	4	L8672c99
64	Gd XXII	+21	Gadolinium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(680)	4	L8672c99
64	Gd XXIII	+22	Gadolinium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(719)	4	L8672c99
64	Gd XXIV	+23	Gadolinium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(761)	4	L8672c99
64	Gd XXV	+24	Gadolinium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(810)	4	L8672c99
64	Gd XXVI	+25	Gadolinium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(851)	4	L8672c99
64	Gd XXVII	+26	Gadolinium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(895)	4	L8672c99
64	Gd XXVIII	+27	Gadolinium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(937)	4	L8672c99
64	Gd XXIX	+28	Gadolinium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(1 100)	4	L8672c99
64	Gd XXX	+29	Gadolinium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(1 142)	4	L8672c99
64	Gd XXXI	+30	Gadolinium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(1 189)	4	L8672c99
64	Gd XXXII	+31	Gadolinium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(1 233)	4	L8672c99
64	Gd XXXIII	+32	Gadolinium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(1 321)	4	L8672c99
64	Gd XXXIV	+33	Gadolinium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(1 368)	5	L8672c99
64	Gd XXXV	+34	Gadolinium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(1 481)	5	L8672c99
64	Gd XXXVI	+35	Gadolinium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[1 532.3]	0.3	L10191
64	Gd XXXVII	+36	Gadolinium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(2 621)	5	L8672c99
64	Gd XXXVIII	+37	Gadolinium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(2 720)	4	L8672c99
64	Gd XXXIX	+38	Gadolinium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(2 827)	4	L8672c99
64	Gd XL	+39	Gadolinium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(2 941)	4	L8672c99
64	Gd XLI	+40	Gadolinium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(3 050)	4	L8672c99
64	Gd XLII	+41	Gadolinium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(3 160)	4	L8672c99
64	Gd XLIII	+42	Gadolinium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(3 312)	4	L8672c99
64	Gd XLIV	+43	Gadolinium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(3 424)	4	L8672c99
64	Gd XLV	+44	Gadolinium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(3 546)	4	L8672c99
64	Gd XLVI	+45	Gadolinium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(3 660)	4	L8672c99
64	Gd XLVII	+46	Gadolinium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(3 980)	4	L8672c99
64	Gd XLVIII	+47	Gadolinium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(4 080)	4	L8672c99
64	Gd XLIX	+48	Gadolinium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(4 191)	4	L8672c99
64	Gd L	+49	Gadolinium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(4 294)	4	L8672c99
64	Gd LI	+50	Gadolinium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(4 578)	4	L8672c99
64	Gd LII	+51	Gadolinium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(4 693)	4	L8672c99
64	Gd LIII	+52	Gadolinium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(4 914)	4	L8672c99
64	Gd LIV	+53	Gadolinium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(5 025)	5	L8672c99
64	Gd LV	+54	Gadolinium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(11 273)	5	L8672c99
64	Gd LVI	+55	Gadolinium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(11 552)	5	L8672c99
64	Gd LVII	+56	Gadolinium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(11 861)	5	L8672c99
64	Gd LVIII	+57	Gadolinium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(12 147)	6	L8672c99
64	Gd LIX	+58	Gadolinium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(13 183)	6	L8672c99
64	Gd LX	+59	Gadolinium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(13 521)	7	L8672c99
64	Gd LXI	+60	Gadolinium	Be	1s²2s²	¹S₀	2s ²S_1/2	(13 943)	10	L8672c99
64	Gd LXII	+61	Gadolinium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(14 224.57)	0.10	L16264c99
64	Gd LXIII	+62	Gadolinium	He	1s²	¹S₀	1s ²S_1/2	(57 783.90)	0.04	L12128
64	Gd LXIV	+63	Gadolinium	H	1s	²S_¹/₂		(59 065.53)	0.20	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Tb (all spectra) 65 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
65	Tb I	0	Terbium	Tb	[Xe]4f⁹6s²	⁶H°_¹⁵/₂	4f⁹(⁶H°)5p⁶6s (15/2,1/2)°₈	5.8638	0.0006	L4277
65	Tb II	+1	Terbium	Gd	[Xe]4f⁹6s	(¹⁵/₂,¹/₂)°₈	4f⁹5p⁶ ⁶H°_15/2	[11.513]	0.020	L19870c180
65	Tb III	+2	Terbium	Eu	[Xe]4f⁹	⁶H°_¹⁵/₂	4f⁸5p⁶ ⁷F₆	[21.82]	0.03	L19883c180
65	Tb IV	+3	Terbium	Sm	[Xe]4f⁸	⁷F₆	4f⁷5s²5p⁶ ⁸S°_7/2	[39.33]	0.04	L19883c180
65	Tb V	+4	Terbium	Pm	[Xe]4f⁷	⁸S°_⁷/₂	4f⁷5s²5p⁵	[66.5]	0.3	L4095
65	Tb VI	+5	Terbium	Nd	[Cd]4f⁷5p⁵		4f⁸5s²5p³°	(90)	4	L582
65	Tb VII	+6	Terbium	Pr	[Cd]4f⁸5p³	°	4f⁷5s²5p³	(108)	5	L582
65	Tb VIII	+7	Terbium	Ce	[Cd]4f⁷5p³		4f⁷5s²5p²°	(125)	6	L582
65	Tb IX	+8	Terbium	La	[Cd]4f⁷5p²	°	4f⁶5s²5p²	(143)	7	L582
65	Tb X	+9	Terbium	Ba	[Cd]4f⁶5p²		4f⁶5s²5p°	(168)	8	L582
65	Tb XI	+10	Terbium	Cs	[Cd]4f⁶5p	°	4f⁶5s²	(186)	9	L582
65	Tb XII	+11	Terbium	Xe	[Cd]4f⁶		4f⁵5s²°	(216)	11	L582
65	Tb XIII	+12	Terbium	I	[Cd]4f⁵	°	4f⁴5s²	(250)	12	L582
65	Tb XIV	+13	Terbium	Te	[Cd]4f⁴		4f⁵ ⁶H°_5/2	(273)	14	L582
65	Tb XV	+14	Terbium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(294)	15	L582
65	Tb XVI	+15	Terbium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(325)	16	L582
65	Tb XVII	+16	Terbium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(358)	17	L582
65	Tb XVIII	+17	Terbium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(393)	20	L582
65	Tb XIX	+18	Terbium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(426.6)	2.5	L582c99
65	Tb XX	+19	Terbium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(613)	4	L8672c99
65	Tb XXI	+20	Terbium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(651)	4	L8672c99
65	Tb XXII	+21	Terbium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(690)	4	L8672c99
65	Tb XXIII	+22	Terbium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(732)	4	L8672c99
65	Tb XXIV	+23	Terbium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(772)	4	L8672c99
65	Tb XXV	+24	Terbium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(816)	4	L8672c99
65	Tb XXVI	+25	Terbium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(866)	4	L8672c99
65	Tb XXVII	+26	Terbium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(909)	4	L8672c99
65	Tb XXVIII	+27	Terbium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(954)	4	L8672c99
65	Tb XXIX	+28	Terbium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(997)	4	L8672c99
65	Tb XXX	+29	Terbium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(1 165)	4	L8672c99
65	Tb XXXI	+30	Terbium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(1 208)	4	L8672c99
65	Tb XXXII	+31	Terbium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(1 256)	4	L8672c99
65	Tb XXXIII	+32	Terbium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(1 301)	4	L8672c99
65	Tb XXXIV	+33	Terbium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(1 393)	5	L8672c99
65	Tb XXXV	+34	Terbium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(1 443)	5	L8672c99
65	Tb XXXVI	+35	Terbium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(1 559)	5	L8672c99
65	Tb XXXVII	+36	Terbium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[1 610.4]	0.7	L10278
65	Tb XXXVIII	+37	Terbium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(2 750)	4	L8672c99
65	Tb XXXIX	+38	Terbium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(2 852)	4	L8672c99
65	Tb XL	+39	Terbium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(2 961)	4	L8672c99
65	Tb XLI	+40	Terbium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(3 078)	4	L8672c99
65	Tb XLII	+41	Terbium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(3 189)	4	L8672c99
65	Tb XLIII	+42	Terbium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(3 300)	4	L8672c99
65	Tb XLIV	+43	Terbium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(3 458)	4	L8672c99
65	Tb XLV	+44	Terbium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(3 573)	4	L8672c99
65	Tb XLVI	+45	Terbium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(3 698)	4	L8672c99
65	Tb XLVII	+46	Terbium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(3 814)	4	L8672c99
65	Tb XLVIII	+47	Terbium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(4 139)	4	L8672c99
65	Tb XLIX	+48	Terbium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(4 242)	4	L8672c99
65	Tb L	+49	Terbium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(4 355)	4	L8672c99
65	Tb LI	+50	Terbium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(4 460)	4	L8672c99
65	Tb LII	+51	Terbium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(4 760)	4	L8672c99
65	Tb LIII	+52	Terbium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(4 877)	4	L8672c99
65	Tb LIV	+53	Terbium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(5 103)	5	L8672c99
65	Tb LV	+54	Terbium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(5 217)	5	L8672c99
65	Tb LVI	+55	Terbium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(11 673)	5	L8672c99
65	Tb LVII	+56	Terbium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(11 957)	5	L8672c99
65	Tb LVIII	+57	Terbium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(12 272)	6	L8672c99
65	Tb LIX	+58	Terbium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(12 563)	6	L8672c99
65	Tb LX	+59	Terbium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(13 658)	7	L8672c99
65	Tb LXI	+60	Terbium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(14 003)	10	L8672c99
65	Tb LXII	+61	Terbium	Be	1s²2s²	¹S₀	2s ²S_1/2	(14 434)	12	L8672c99
65	Tb LXIII	+62	Terbium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(14 721.02)	0.10	L16264c99
65	Tb LXIV	+63	Terbium	He	1s²	¹S₀	1s ²S_1/2	(59 739.3)	0.3	L10054
65	Tb LXV	+64	Terbium	H	1s	²S_¹/₂		(61 049.65)	0.22	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Dy (all spectra) 66 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
66	Dy I	0	Dysprosium	Dy	[Xe]4f¹⁰6s²	⁵I₈	4f¹⁰(⁵I₈)6s_1/2 (8,1/2)_17/2	5.93905	0.00007	L14730
66	Dy II	+1	Dysprosium	Tb	[Xe]4f¹⁰6s	(8,¹/₂)_¹⁷/₂	4f¹⁰5p⁶ ⁵I₈	[11.647]	0.020	L19870c180
66	Dy III	+2	Dysprosium	Gd	[Xe]4f¹⁰	⁵I₈	4f⁹5p⁶ ⁶H°_15/2	[22.89]	0.03	L19883c180
66	Dy IV	+3	Dysprosium	Eu	[Xe]4f⁹	⁶H°_¹⁵/₂	4f⁸5p⁶ ⁷F₆	[41.23]	0.08	L19883c180
66	Dy V	+4	Dysprosium	Sm	[Xe]4f⁸	⁷F₆	4f⁸5s²5p⁵°	[62.1]	0.3	L4095
66	Dy VI	+5	Dysprosium	Pm	[Cd]4f⁸5p⁵	°	4f⁸5s²5p⁴	(93)	5	L582
66	Dy VII	+6	Dysprosium	Nd	[Cd]4f⁸5p⁴		4f⁹5s²5p²°	(110)	5	L582
66	Dy VIII	+7	Dysprosium	Pr	[Cd]4f⁹5p²	°	4f⁸5s²5p²	(127)	6	L582
66	Dy IX	+8	Dysprosium	Ce	[Cd]4f⁸5p²		4f⁸5s²5p°	(152)	8	L582
66	Dy X	+9	Dysprosium	La	[Cd]4f⁸5p	°	4f⁸5s²	(170)	9	L582
66	Dy XI	+10	Dysprosium	Ba	[Cd]4f⁸		4f⁷5s²°	(192)	10	L582
66	Dy XII	+11	Dysprosium	Cs	[Cd]4f⁷	°	4f⁶5s²	(224)	11	L582
66	Dy XIII	+12	Dysprosium	Xe	[Cd]4f⁶		4f⁶5s°	(259)	12	L582
66	Dy XIV	+13	Dysprosium	I	[Kr]4d¹⁰4f⁶5s		4f⁴5s²	(279)	14	L582
66	Dy XV	+14	Dysprosium	Te	[Cd]4f⁴		4f⁵ ⁶H°_5/2	(300)	15	L582
66	Dy XVI	+15	Dysprosium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(332)	16	L582
66	Dy XVII	+16	Dysprosium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(366)	19	L582
66	Dy XVIII	+17	Dysprosium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(399)	20	L582
66	Dy XIX	+18	Dysprosium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(431)	21	L582
66	Dy XX	+19	Dysprosium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(464.9)	2.5	L582c99
66	Dy XXI	+20	Dysprosium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(664)	4	L8672c99
66	Dy XXII	+21	Dysprosium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(702)	4	L8672c99
66	Dy XXIII	+22	Dysprosium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(743)	4	L8672c99
66	Dy XXIV	+23	Dysprosium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(786)	4	L8672c99
66	Dy XXV	+24	Dysprosium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(827)	4	L8672c99
66	Dy XXVI	+25	Dysprosium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(872)	4	L8672c99
66	Dy XXVII	+26	Dysprosium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(924)	4	L8672c99
66	Dy XXVIII	+27	Dysprosium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(969)	4	L8672c99
66	Dy XXIX	+28	Dysprosium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(1 014)	4	L8672c99
66	Dy XXX	+29	Dysprosium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(1 059)	4	L8672c99
66	Dy XXXI	+30	Dysprosium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(1 232)	4	L8672c99
66	Dy XXXII	+31	Dysprosium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(1 275)	4	L8672c99
66	Dy XXXIII	+32	Dysprosium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(1 325)	4	L8672c99
66	Dy XXXIV	+33	Dysprosium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(1 371)	5	L8672c99
66	Dy XXXV	+34	Dysprosium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(1 468)	5	L8672c99
66	Dy XXXVI	+35	Dysprosium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(1 520)	5	L8672c99
66	Dy XXXVII	+36	Dysprosium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(1 638)	5	L8672c99
66	Dy XXXVIII	+37	Dysprosium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[1 691.7]	0.3	L5473
66	Dy XXXIX	+38	Dysprosium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(2 882)	4	L8672c99
66	Dy XL	+39	Dysprosium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(2 987)	4	L8672c99
66	Dy XLI	+40	Dysprosium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(3 098)	4	L8672c99
66	Dy XLII	+41	Dysprosium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(3 217)	4	L8672c99
66	Dy XLIII	+42	Dysprosium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(3 331)	4	L8672c99
66	Dy XLIV	+43	Dysprosium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(3 445)	4	L8672c99
66	Dy XLV	+44	Dysprosium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(3 607)	4	L8672c99
66	Dy XLVI	+45	Dysprosium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(3 725)	4	L8672c99
66	Dy XLVII	+46	Dysprosium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(3 852)	4	L8672c99
66	Dy XLVIII	+47	Dysprosium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(3 970)	4	L8672c99
66	Dy XLIX	+48	Dysprosium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(4 303)	4	L8672c99
66	Dy L	+49	Dysprosium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(4 407)	4	L8672c99
66	Dy LI	+50	Dysprosium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(4 523)	4	L8672c99
66	Dy LII	+51	Dysprosium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(4 629)	4	L8672c99
66	Dy LIII	+52	Dysprosium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(4 945)	4	L8672c99
66	Dy LIV	+53	Dysprosium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(5 066)	5	L8672c99
66	Dy LV	+54	Dysprosium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(5 296)	5	L8672c99
66	Dy LVI	+55	Dysprosium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(5 412)	5	L8672c99
66	Dy LVII	+56	Dysprosium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(12 081)	5	L8672c99
66	Dy LVIII	+57	Dysprosium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(12 370)	6	L8672c99
66	Dy LIX	+58	Dysprosium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(12 690)	6	L8672c99
66	Dy LX	+59	Dysprosium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(12 986)	7	L8672c99
66	Dy LXI	+60	Dysprosium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(14 144)	10	L8672c99
66	Dy LXII	+61	Dysprosium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(14 495)	12	L8672c99
66	Dy LXIII	+62	Dysprosium	Be	1s²2s²	¹S₀	2s ²S_1/2	(14 936)	15	L8672c99
66	Dy LXIV	+63	Dysprosium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(15 228.06)	0.11	L16264c99
66	Dy LXV	+64	Dysprosium	He	1s²	¹S₀	1s ²S_1/2	(61 736.55)	0.05	L12128
66	Dy LXVI	+65	Dysprosium	H	1s	²S_¹/₂		(63 073.5)	0.4	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Ho (all spectra) 67 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
67	Ho I	0	Holmium	Ho	[Xe]4f¹¹6s²	⁴I°_¹⁵/₂	4f¹¹(⁴I°)5p⁶6s (15/2,1/2)°₈	6.0215	0.0006	L4277
67	Ho II	+1	Holmium	Dy	[Xe]4f¹¹6s	(¹⁵/₂,¹/₂)°₈	4f¹¹ ⁴I°_15/2	[11.781]	0.020	L19870c180
67	Ho III	+2	Holmium	Tb	[Xe]4f¹¹	⁴I°_¹⁵/₂	4f¹⁰5p⁶ ⁵I₈	[22.79]	0.03	L19883c180
67	Ho IV	+3	Holmium	Gd	[Xe]4f¹⁰	⁵I₈	4f⁹5p⁶ ⁶H°_15/2	[42.52]	0.08	L19883c180
67	Ho V	+4	Holmium	Eu	[Xe]4f⁹	⁶H°_¹⁵/₂	4f⁹5p⁵	[63.9]	0.3	L4095
67	Ho VI	+5	Holmium	Sm	[Cd]4f⁹5p⁵		4f⁹5s²5p⁴°	(95)	5	L582
67	Ho VII	+6	Holmium	Pm	[Cd]4f⁹5p⁴	°	4f⁹5s²5p³	(112)	6	L582
67	Ho VIII	+7	Holmium	Nd	[Cd]4f⁹5p³		4f¹⁰5s²5p°	(129)	6	L582
67	Ho IX	+8	Holmium	Pr	[Cd]4f¹⁰5p	°	4f⁹5s²5p	(155)	8	L582
67	Ho X	+9	Holmium	Ce	[Cd]4f⁹5p		4f⁹5s²°	(173)	9	L582
67	Ho XI	+10	Holmium	La	[Cd]4f⁹	°	4f⁸5s²	(197)	10	L582
67	Ho XII	+11	Holmium	Ba	[Cd]4f⁸		4f⁷5s²°	(229)	12	L582
67	Ho XIII	+12	Holmium	Cs	[Cd]4f⁷	°	4f⁶5s²	(263)	14	L582
67	Ho XIV	+13	Holmium	Xe	[Cd]4f⁶		4f⁶5s°	(284)	14	L582
67	Ho XV	+14	Holmium	I	[Kr]4d¹⁰4f⁶5s		4f⁴5s²	(305)	15	L582
67	Ho XVI	+15	Holmium	Te	[Cd]4f⁴		4f⁵ ⁶H°_5/2	(340)	17	L582
67	Ho XVII	+16	Holmium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(373)	19	L582
67	Ho XVIII	+17	Holmium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(408)	20	L582
67	Ho XIX	+18	Holmium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(441)	22	L582
67	Ho XX	+19	Holmium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(475)	24	L582
67	Ho XXI	+20	Holmium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(510)	4	L582c99
67	Ho XXII	+21	Holmium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(715)	4	L8672c99
67	Ho XXIII	+22	Holmium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(755)	4	L8672c99
67	Ho XXIV	+23	Holmium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(797)	4	L8672c99
67	Ho XXV	+24	Holmium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(842)	4	L8672c99
67	Ho XXVI	+25	Holmium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(885)	4	L8672c99
67	Ho XXVII	+26	Holmium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(929)	4	L8672c99
67	Ho XXVIII	+27	Holmium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(985)	4	L8672c99
67	Ho XXIX	+28	Holmium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(1 029)	4	L8672c99
67	Ho XXX	+29	Holmium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(1 077)	4	L8672c99
67	Ho XXXI	+30	Holmium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(1 122)	4	L8672c99
67	Ho XXXII	+31	Holmium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(1 300)	4	L8672c99
67	Ho XXXIII	+32	Holmium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(1 346)	4	L8672c99
67	Ho XXXIV	+33	Holmium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(1 395)	5	L8672c99
67	Ho XXXV	+34	Holmium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(1 443)	5	L8672c99
67	Ho XXXVI	+35	Holmium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(1 545)	5	L8672c99
67	Ho XXXVII	+36	Holmium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(1 598)	5	L8672c99
67	Ho XXXVIII	+37	Holmium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(1 719)	4	L8672c99
67	Ho XXXIX	+38	Holmium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[1 773.6]	0.9	L10278
67	Ho XL	+39	Holmium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(3 018)	4	L8672c99
67	Ho XLI	+40	Holmium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(3 125)	4	L8672c99
67	Ho XLII	+41	Holmium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(3 238)	4	L8672c99
67	Ho XLIII	+42	Holmium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(3 359)	4	L8672c99
67	Ho XLIV	+43	Holmium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(3 476)	4	L8672c99
67	Ho XLV	+44	Holmium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(3 592)	4	L8672c99
67	Ho XLVI	+45	Holmium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(3 760)	4	L8672c99
67	Ho XLVII	+46	Holmium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(3 880)	4	L8672c99
67	Ho XLVIII	+47	Holmium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(4 009)	4	L8672c99
67	Ho XLIX	+48	Holmium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(4 131)	4	L8672c99
67	Ho L	+49	Holmium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(4 469)	4	L8672c99
67	Ho LI	+50	Holmium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(4 576)	4	L8672c99
67	Ho LII	+51	Holmium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(4 693)	4	L8672c99
67	Ho LIII	+52	Holmium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(4 802)	4	L8672c99
67	Ho LIV	+53	Holmium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(5 135)	5	L8672c99
67	Ho LV	+54	Holmium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(5 258)	5	L8672c99
67	Ho LVI	+55	Holmium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(5 494)	5	L8672c99
67	Ho LVII	+56	Holmium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(5 611)	5	L8672c99
67	Ho LVIII	+57	Holmium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(12 495)	6	L8672c99
67	Ho LIX	+58	Holmium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(12 790)	6	L8672c99
67	Ho LX	+59	Holmium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(13 116)	7	L8672c99
67	Ho LXI	+60	Holmium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(13 417)	10	L8672c99
67	Ho LXII	+61	Holmium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(14 639)	12	L8672c99
67	Ho LXIII	+62	Holmium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(14 998)	15	L8672c99
67	Ho LXIV	+63	Holmium	Be	1s²2s²	¹S₀	2s ²S_1/2	(15 448)	19	L8672c99
67	Ho LXV	+64	Holmium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(15 745.77)	0.11	L16264c99
67	Ho LXVI	+65	Holmium	He	1s²	¹S₀	1s ²S_1/2	(63 772.42)	0.15	L12128
67	Ho LXVII	+66	Holmium	H	1s	²S_¹/₂		(65 136.8)	0.4	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Er (all spectra) 68 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
68	Er I	0	Erbium	Er	[Xe]4f¹²6s²	³H₆	4f¹²(³H)5p⁶6s (6,1/2)_13/2	6.1077	0.0010	L4277
68	Er II	+1	Erbium	Ho	[Xe]4f¹²6s	(6,¹/₂)_¹³/₂	4f¹²5p⁶ ³H₆	[11.916]	0.020	L19870c180
68	Er III	+2	Erbium	Dy	[Xe]4f¹²	³H₆	4f¹¹ ⁴I°_15/2	[22.70]	0.03	L19883c180
68	Er IV	+3	Erbium	Tb	[Xe]4f¹¹	⁴I°_¹⁵/₂	4f¹⁰5p⁶ ⁵I₈	[42.42]	0.04	L19883c180
68	Er V	+4	Erbium	Gd	[Xe]4f¹⁰	⁵I₈	4f¹⁰5p⁵°	[65.1]	0.4	L4095
68	Er VI	+5	Erbium	Eu	[Cd]4f¹⁰5p⁵	°	4f¹⁰5p⁴	(96)	5	L582
68	Er VII	+6	Erbium	Sm	[Cd]4f¹⁰5p⁴		4f¹⁰5s²5p³°	(114)	6	L582
68	Er VIII	+7	Erbium	Pm	[Cd]4f¹⁰5p³	°	4f¹⁰5s²5p²	(131)	7	L582
68	Er IX	+8	Erbium	Nd	[Cd]4f¹⁰5p²		4f¹⁰5s²5p°	(158)	8	L582
68	Er X	+9	Erbium	Pr	[Cd]4f¹⁰5p	°	4f¹⁰5s²	(177)	9	L582
68	Er XI	+10	Erbium	Ce	[Cd]4f¹⁰		4f⁹5s²°	(201)	10	L582
68	Er XII	+11	Erbium	La	[Cd]4f⁹	°	4f⁸5s²	(235)	11	L582
68	Er XIII	+12	Erbium	Ba	[Cd]4f⁸		4f⁷5s²°	(268)	14	L582
68	Er XIV	+13	Erbium	Cs	[Cd]4f⁷	°	4f⁷5s°	(290)	15	L582
68	Er XV	+14	Erbium	Xe	[Kr]4d¹⁰4f⁷5s	°	4f⁷ ⁸S°_7/2	(311)	16	L582
68	Er XVI	+15	Erbium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(345)	17	L582
68	Er XVII	+16	Erbium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(381)	19	L582
68	Er XVIII	+17	Erbium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(415)	21	L582
68	Er XIX	+18	Erbium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(450)	22	L582
68	Er XX	+19	Erbium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(486)	25	L582
68	Er XXI	+20	Erbium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(520)	30	L582
68	Er XXII	+21	Erbium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(555)	5	L582c99
68	Er XXIII	+22	Erbium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(770)	4	L8672c99
68	Er XXIV	+23	Erbium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(810)	4	L8672c99
68	Er XXV	+24	Erbium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(853)	4	L8672c99
68	Er XXVI	+25	Erbium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(899)	4	L8672c99
68	Er XXVII	+26	Erbium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(943)	4	L8672c99
68	Er XXVIII	+27	Erbium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(989)	4	L8672c99
68	Er XXIX	+28	Erbium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(1 046)	4	L8672c99
68	Er XXX	+29	Erbium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(1 092)	4	L8672c99
68	Er XXXI	+30	Erbium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(1 142)	4	L8672c99
68	Er XXXII	+31	Erbium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(1 188)	4	L8672c99
68	Er XXXIII	+32	Erbium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(1 370)	4	L8672c99
68	Er XXXIV	+33	Erbium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(1 416)	5	L8672c99
68	Er XXXV	+34	Erbium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(1 468)	5	L8672c99
68	Er XXXVI	+35	Erbium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(1 516)	5	L8672c99
68	Er XXXVII	+36	Erbium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(1 625)	5	L8672c99
68	Er XXXVIII	+37	Erbium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(1 678)	4	L8672c99
68	Er XXXIX	+38	Erbium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(1 803)	4	L8672c99
68	Er XL	+39	Erbium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[1 858.5]	0.5	L5473
68	Er XLI	+40	Erbium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(3 157)	4	L8672c99
68	Er XLII	+41	Erbium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(3 265)	4	L8672c99
68	Er XLIII	+42	Erbium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(3 381)	4	L8672c99
68	Er XLIV	+43	Erbium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(3 505)	4	L8672c99
68	Er XLV	+44	Erbium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(3 624)	4	L8672c99
68	Er XLVI	+45	Erbium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(3 742)	4	L8672c99
68	Er XLVII	+46	Erbium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(3 916)	4	L8672c99
68	Er XLVIII	+47	Erbium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(4 038)	4	L8672c99
68	Er XLIX	+48	Erbium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(4 170)	4	L8672c99
68	Er L	+49	Erbium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(4 294)	4	L8672c99
68	Er LI	+50	Erbium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(4 639)	4	L8672c99
68	Er LII	+51	Erbium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(4 748)	4	L8672c99
68	Er LIII	+52	Erbium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(4 866)	4	L8672c99
68	Er LIV	+53	Erbium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(4 978)	5	L8672c99
68	Er LV	+54	Erbium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(5 329)	5	L8672c99
68	Er LVI	+55	Erbium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(5 455)	5	L8672c99
68	Er LVII	+56	Erbium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(5 695)	5	L8672c99
68	Er LVIII	+57	Erbium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(5 815)	6	L8672c99
68	Er LIX	+58	Erbium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(12 918)	6	L8672c99
68	Er LX	+59	Erbium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(13 217)	7	L8672c99
68	Er LXI	+60	Erbium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(13 548)	10	L8672c99
68	Er LXII	+61	Erbium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(13 855)	12	L8672c99
68	Er LXIII	+62	Erbium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(15 146)	15	L8672c99
68	Er LXIV	+63	Erbium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(15 511)	19	L8672c99
68	Er LXV	+64	Erbium	Be	1s²2s²	¹S₀	2s ²S_1/2	(15 971)	24	L8672c99
68	Er LXVI	+65	Erbium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(16 274.56)	0.12	L16264c99
68	Er LXVII	+66	Erbium	He	1s²	¹S₀	1s ²S_1/2	(65 848.24)	0.06	L12128
68	Er LXVIII	+67	Erbium	H	1s	²S_¹/₂		(67 241.8)	0.4	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Tm (all spectra) 69 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
69	Tm I	0	Thulium	Tm	[Xe]4f¹³6s²	²F°_⁷/₂	4f¹³6s (7/2,1/2)°₄	6.18431	0.00006	L3974,L946
69	Tm II	+1	Thulium	Er	[Xe]4f¹³6s	(⁷/₂,¹/₂)°₄	4f¹³5p⁶ ²F°_7/2	[12.065]	0.020	L19870c180
69	Tm III	+2	Thulium	Ho	[Xe]4f¹³	²F°_⁷/₂	4f¹²5p⁶ ³H₆	[23.66]	0.03	L19883c180
69	Tm IV	+3	Thulium	Dy	[Xe]4f¹²	³H₆	4f¹¹ ⁴I°_15/2	[42.41]	0.04	L19883c180
69	Tm V	+4	Thulium	Tb	[Xe]4f¹¹	⁴I°_¹⁵/₂	4f¹¹5p⁵ ⁵I₈	[65.4]	0.3	L4095
69	Tm VI	+5	Thulium	Gd	[Cd]4f¹¹5p⁵	⁵I₈	4f¹¹5p⁴°	(98)	5	L582
69	Tm VII	+6	Thulium	Eu	[Cd]4f¹¹5p⁴	°	4f¹¹5p³	(116)	6	L582
69	Tm VIII	+7	Thulium	Sm	[Cd]4f¹¹5p³		4f¹¹5s²5p²°	(133)	7	L582
69	Tm IX	+8	Thulium	Pm	[Cd]4f¹¹5p²	°	4f¹¹5s²5p	(160)	8	L582
69	Tm X	+9	Thulium	Nd	[Cd]4f¹¹5p		4f¹¹5s² ⁴I°_15/2	(180)	9	L582
69	Tm XI	+10	Thulium	Pr	[Cd]4f¹¹	⁴I°_¹⁵/₂	4f¹⁰5s²	(205)	10	L582
69	Tm XII	+11	Thulium	Ce	[Cd]4f¹⁰		4f⁹5s²°	(239)	12	L582
69	Tm XIII	+12	Thulium	La	[Cd]4f⁹	°	4f⁹5s°	(274)	14	L582
69	Tm XIV	+13	Thulium	Ba	[Kr]4d¹⁰4f⁹5s	°	4f⁹ ⁶H°_15/2	(295)	15	L582
69	Tm XV	+14	Thulium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(317)	16	L582
69	Tm XVI	+15	Thulium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(352)	17	L582
69	Tm XVII	+16	Thulium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(387)	20	L582
69	Tm XVIII	+17	Thulium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(424)	21	L582
69	Tm XIX	+18	Thulium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(460)	24	L582
69	Tm XX	+19	Thulium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(496)	25	L582
69	Tm XXI	+20	Thulium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(530)	30	L582
69	Tm XXII	+21	Thulium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(570)	30	L582
69	Tm XXIII	+22	Thulium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(603)	6	L582c99
69	Tm XXIV	+23	Thulium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(825)	4	L8672c99
69	Tm XXV	+24	Thulium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(866)	4	L8672c99
69	Tm XXVI	+25	Thulium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(911)	4	L8672c99
69	Tm XXVII	+26	Thulium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(958)	4	L8672c99
69	Tm XXVIII	+27	Thulium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(1 004)	4	L8672c99
69	Tm XXIX	+28	Thulium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(1 050)	4	L8672c99
69	Tm XXX	+29	Thulium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(1 110)	4	L8672c99
69	Tm XXXI	+30	Thulium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(1 157)	4	L8672c99
69	Tm XXXII	+31	Thulium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(1 207)	4	L8672c99
69	Tm XXXIII	+32	Thulium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(1 255)	4	L8672c99
69	Tm XXXIV	+33	Thulium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(1 442)	5	L8672c99
69	Tm XXXV	+34	Thulium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(1 490)	5	L8672c99
69	Tm XXXVI	+35	Thulium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(1 542)	5	L8672c99
69	Tm XXXVII	+36	Thulium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(1 591)	5	L8672c99
69	Tm XXXVIII	+37	Thulium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(1 706)	4	L8672c99
69	Tm XXXIX	+38	Thulium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(1 761)	4	L8672c99
69	Tm XL	+39	Thulium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(1 889)	4	L8672c99
69	Tm XLI	+40	Thulium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[1 945.2]	1.0	L10278
69	Tm XLII	+41	Thulium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(3 298)	4	L8672c99
69	Tm XLIII	+42	Thulium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(3 409)	4	L8672c99
69	Tm XLIV	+43	Thulium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(3 528)	4	L8672c99
69	Tm XLV	+44	Thulium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(3 653)	4	L8672c99
69	Tm XLVI	+45	Thulium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(3 775)	4	L8672c99
69	Tm XLVII	+46	Thulium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(3 895)	4	L8672c99
69	Tm XLVIII	+47	Thulium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(4 075)	4	L8672c99
69	Tm XLIX	+48	Thulium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(4 199)	4	L8672c99
69	Tm L	+49	Thulium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(4 335)	4	L8672c99
69	Tm LI	+50	Thulium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(4 461)	4	L8672c99
69	Tm LII	+51	Thulium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(4 812)	4	L8672c99
69	Tm LIII	+52	Thulium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(4 922)	4	L8672c99
69	Tm LIV	+53	Thulium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(5 044)	5	L8672c99
69	Tm LV	+54	Thulium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(5 157)	5	L8672c99
69	Tm LVI	+55	Thulium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(5 527)	5	L8672c99
69	Tm LVII	+56	Thulium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(5 656)	5	L8672c99
69	Tm LVIII	+57	Thulium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(5 901)	6	L8672c99
69	Tm LIX	+58	Thulium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(6 023)	6	L8672c99
69	Tm LX	+59	Thulium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(13 347)	7	L8672c99
69	Tm LXI	+60	Thulium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(13 651)	10	L8672c99
69	Tm LXII	+61	Thulium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(13 988)	12	L8672c99
69	Tm LXIII	+62	Thulium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(14 300)	15	L8672c99
69	Tm LXIV	+63	Thulium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(15 663)	19	L8672c99
69	Tm LXV	+64	Thulium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(16 036)	24	L8672c99
69	Tm LXVI	+65	Thulium	Be	1s²2s²	¹S₀	2s ²S_1/2	(16 510)	30	L8672c99
69	Tm LXVII	+66	Thulium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(16 814.34)	0.14	L16264c99
69	Tm LXVIII	+67	Thulium	He	1s²	¹S₀	1s ²S_1/2	(67 965.26)	0.06	L12128
69	Tm LXIX	+68	Thulium	H	1s	²S_¹/₂		(69 387.3)	0.3	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Yb (all spectra) 70 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
70	Yb I	0	Ytterbium	Yb	[Xe]4f¹⁴6s²	¹S₀	6s ²S_1/2	6.254160	0.000012	L4980
70	Yb II	+1	Ytterbium	Tm	[Xe]4f¹⁴6s	²S_¹/₂	4f¹⁴ ¹S₀	12.179185	0.000025	L12907
70	Yb III	+2	Ytterbium	Er	[Xe]4f¹⁴	¹S₀	4f¹³5p⁶ ²F°_7/2	[25.053]	0.025	L3974,L3654
70	Yb IV	+3	Ytterbium	Ho	[Xe]4f¹³	²F°_⁷/₂	4f¹²5p⁶ ³H₆	[43.61]	0.04	L19883c180
70	Yb V	+4	Ytterbium	Dy	[Xe]4f¹²	³H₆	4f¹²5p⁵°	[65.6]	0.3	L4095
70	Yb VI	+5	Ytterbium	Tb	[Cd]4f¹²5p⁵	°	4f¹²5p⁴	(99)	5	L582
70	Yb VII	+6	Ytterbium	Gd	[Cd]4f¹²5p⁴		4f¹²5p³°	(117)	6	L582
70	Yb VIII	+7	Ytterbium	Eu	[Cd]4f¹²5p³	°	4f¹²5p²	(135)	7	L582
70	Yb IX	+8	Ytterbium	Sm	[Cd]4f¹²5p²		4f¹²5s²5p°	(163)	8	L582
70	Yb X	+9	Ytterbium	Pm	[Cd]4f¹²5p	°	4f¹²5s² ³H₆	(182)	9	L582
70	Yb XI	+10	Ytterbium	Nd	[Cd]4f¹²	³H₆	4f¹¹5s² ⁴I°_15/2	(209)	10	L582
70	Yb XII	+11	Ytterbium	Pr	[Cd]4f¹¹	⁴I°_¹⁵/₂	4f¹⁰5s²	(244)	12	L582
70	Yb XIII	+12	Ytterbium	Ce	[Cd]4f¹⁰		4f¹⁰5s	(279)	14	L582
70	Yb XIV	+13	Ytterbium	La	[Kr]4d¹⁰4f¹⁰5s		4f¹⁰	(301)	15	L582
70	Yb XV	+14	Ytterbium	Ba	[Kr]4d¹⁰4f¹⁰		4f⁹ ⁶H°_15/2	(324)	16	L582
70	Yb XVI	+15	Ytterbium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(360)	19	L582
70	Yb XVII	+16	Ytterbium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(396)	20	L582
70	Yb XVIII	+17	Ytterbium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(431)	21	L582
70	Yb XIX	+18	Ytterbium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(469)	24	L582
70	Yb XX	+19	Ytterbium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(505)	25	L582
70	Yb XXI	+20	Ytterbium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(540)	30	L582
70	Yb XXII	+21	Ytterbium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(580)	30	L582
70	Yb XXIII	+22	Ytterbium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(610)	30	L582
70	Yb XXIV	+23	Ytterbium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(651)	6	L582c99
70	Yb XXV	+24	Ytterbium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(882)	4	L8672c99
70	Yb XXVI	+25	Ytterbium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(924)	4	L8672c99
70	Yb XXVII	+26	Ytterbium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(971)	4	L8672c99
70	Yb XXVIII	+27	Ytterbium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(1 019)	4	L8672c99
70	Yb XXIX	+28	Ytterbium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(1 065)	4	L8672c99
70	Yb XXX	+29	Ytterbium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(1 114)	4	L8672c99
70	Yb XXXI	+30	Ytterbium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(1 175)	4	L8672c99
70	Yb XXXII	+31	Ytterbium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(1 224)	4	L8672c99
70	Yb XXXIII	+32	Ytterbium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(1 275)	4	L8672c99
70	Yb XXXIV	+33	Ytterbium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(1 324)	5	L8672c99
70	Yb XXXV	+34	Ytterbium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(1 516)	5	L8672c99
70	Yb XXXVI	+35	Ytterbium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(1 564)	5	L8672c99
70	Yb XXXVII	+36	Ytterbium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(1 618)	5	L8672c99
70	Yb XXXVIII	+37	Ytterbium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(1 668)	4	L8672c98,c99
70	Yb XXXIX	+38	Ytterbium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(1 789)	4	L8672c98,c99
70	Yb XL	+39	Ytterbium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(1 845)	4	L8672c99
70	Yb XLI	+40	Ytterbium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(1 978)	4	L8672c99
70	Yb XLII	+41	Ytterbium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[2 036.4]	1.0	L10191
70	Yb XLIII	+42	Ytterbium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(3 443)	4	L8672c99
70	Yb XLIV	+43	Ytterbium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(3 555)	4	L8672c99
70	Yb XLV	+44	Ytterbium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(3 677)	4	L8672c99
70	Yb XLVI	+45	Ytterbium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(3 805)	4	L8672c99
70	Yb XLVII	+46	Ytterbium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(3 929)	4	L8672c99
70	Yb XLVIII	+47	Ytterbium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(4 051)	4	L8672c99
70	Yb XLIX	+48	Ytterbium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(4 238)	4	L8672c99
70	Yb L	+49	Ytterbium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(4 364)	4	L8672c99
70	Yb LI	+50	Ytterbium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(4 502)	4	L8672c99
70	Yb LII	+51	Ytterbium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(4 630)	4	L8672c99
70	Yb LIII	+52	Ytterbium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(4 988)	4	L8672c99
70	Yb LIV	+53	Ytterbium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(5 101)	5	L8672c99
70	Yb LV	+54	Ytterbium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(5 224)	5	L8672c99
70	Yb LVI	+55	Ytterbium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(5 339)	5	L8672c99
70	Yb LVII	+56	Ytterbium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(5 731)	5	L8672c99
70	Yb LVIII	+57	Ytterbium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(5 860)	6	L8672c99
70	Yb LIX	+58	Ytterbium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(6 111)	6	L8672c99
70	Yb LX	+59	Ytterbium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(6 236)	7	L8672c99
70	Yb LXI	+60	Ytterbium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(13 784)	10	L8672c99
70	Yb LXII	+61	Ytterbium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(14 093)	12	L8672c99
70	Yb LXIII	+62	Ytterbium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(14 435)	15	L8672c99
70	Yb LXIV	+63	Ytterbium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(14 752)	19	L8672c99
70	Yb LXV	+64	Ytterbium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(16 191)	24	L8672c99
70	Yb LXVI	+65	Ytterbium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(16 570)	30	L8672c99
70	Yb LXVII	+66	Ytterbium	Be	1s²2s²	¹S₀	2s ²S_1/2	(17 050)	40	L8672c99
70	Yb LXVIII	+67	Ytterbium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(17 365.44)	0.15	L16264c99
70	Yb LXIX	+68	Ytterbium	He	1s²	¹S₀	1s ²S_1/2	(70 123.04)	0.07	L12128
70	Yb LXX	+69	Ytterbium	H	1s	²S_¹/₂		(71 574.8)	0.3	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Lu (all spectra) 71 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
71	Lu I	0	Lutetium	Lu	[Xe]4f¹⁴5d6s²	²D_³/₂	6s² ¹S₀	5.425871	0.000012	L10494,L1638
71	Lu II	+1	Lutetium	Yb	[Xe]4f¹⁴6s²	¹S₀	6s ²S_1/2	[14.13]	0.05	L19870c180
71	Lu III	+2	Lutetium	Tm	[Xe]4f¹⁴6s	²S_¹/₂	4f¹⁴ ¹S₀	20.9594	0.0012	L1402
71	Lu IV	+3	Lutetium	Er	[Xe]4f¹⁴	¹S₀	4f¹³5p⁶ ²F°_7/2	[45.249]	0.025	L3974,L3654
71	Lu V	+4	Lutetium	Ho	[Xe]4f¹³	²F°_⁷/₂	4f¹²5p⁶ ³H₆	[66.8]	0.3	L4095
71	Lu VI	+5	Lutetium	Dy	[Xe]4f¹²	³H₆	4f¹³5p⁴°	(98)	5	L582
71	Lu VII	+6	Lutetium	Tb	[Cd]4f¹³5p⁴	°	4f¹³5p³	(117)	6	L582
71	Lu VIII	+7	Lutetium	Gd	[Cd]4f¹³5p³		4f¹³5p² ⁴F°_7/2	(136)	7	L582
71	Lu IX	+8	Lutetium	Eu	[Cd]4f¹³5p²	⁴F°_⁷/₂	4f¹²5p²	(159)	8	L582
71	Lu X	+9	Lutetium	Sm	[Cd]4f¹²5p²		4f¹²5s²5p°	(185)	9	L582
71	Lu XI	+10	Lutetium	Pm	[Cd]4f¹²5p	°	4f¹²5s² ³H₆	(205)	10	L582
71	Lu XII	+11	Lutetium	Nd	[Cd]4f¹²	³H₆	4f¹¹5s² ⁴I°_15/2	(238)	12	L582
71	Lu XIII	+12	Lutetium	Pr	[Cd]4f¹¹	⁴I°_¹⁵/₂	4f¹⁰5s²	(276)	14	L582
71	Lu XIV	+13	Lutetium	Ce	[Cd]4f¹⁰		4f¹⁰5s	(305)	15	L582
71	Lu XV	+14	Lutetium	La	[Kr]4d¹⁰4f¹⁰5s		4f¹⁰	(328)	16	L582
71	Lu XVI	+15	Lutetium	Ba	[Kr]4d¹⁰4f¹⁰		4f⁹ ⁶H°_15/2	(361)	19	L582
71	Lu XVII	+16	Lutetium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(399)	20	L582
71	Lu XVIII	+17	Lutetium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(438)	22	L582
71	Lu XIX	+18	Lutetium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(476)	24	L582
71	Lu XX	+19	Lutetium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(520)	30	L582
71	Lu XXI	+20	Lutetium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(560)	30	L582
71	Lu XXII	+21	Lutetium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(600)	30	L582
71	Lu XXIII	+22	Lutetium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(630)	30	L582
71	Lu XXIV	+23	Lutetium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(670)	30	L582
71	Lu XXV	+24	Lutetium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(713)	7	L582c99
71	Lu XXVI	+25	Lutetium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(941)	4	L8672c99
71	Lu XXVII	+26	Lutetium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(985)	4	L8672c99
71	Lu XXVIII	+27	Lutetium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(1 032)	4	L8672c99
71	Lu XXIX	+28	Lutetium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(1 081)	4	L8672c99
71	Lu XXX	+29	Lutetium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(1 130)	4	L8672c99
71	Lu XXXI	+30	Lutetium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(1 178)	4	L8672c99
71	Lu XXXII	+31	Lutetium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(1 242)	4	L8672c99
71	Lu XXXIII	+32	Lutetium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(1 292)	4	L8672c99
71	Lu XXXIV	+33	Lutetium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(1 345)	5	L8672c99
71	Lu XXXV	+34	Lutetium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(1 395)	5	L8672c99
71	Lu XXXVI	+35	Lutetium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(1 591)	5	L8672c99
71	Lu XXXVII	+36	Lutetium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(1 641)	5	L8672c99
71	Lu XXXVIII	+37	Lutetium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(1 696)	4	L8672c99
71	Lu XXXIX	+38	Lutetium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(1 747)	4	L8672c99
71	Lu XL	+39	Lutetium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(1 875)	4	L8672c99
71	Lu XLI	+40	Lutetium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(1 933)	4	L8672c99
71	Lu XLII	+41	Lutetium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(2 067)	4	L8672c99
71	Lu XLIII	+42	Lutetium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[2 125.5]	1.1	L10278
71	Lu XLIV	+43	Lutetium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(3 590)	4	L8672c99
71	Lu XLV	+44	Lutetium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(3 706)	4	L8672c99
71	Lu XLVI	+45	Lutetium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(3 828)	4	L8672c99
71	Lu XLVII	+46	Lutetium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(3 960)	4	L8672c99
71	Lu XLVIII	+47	Lutetium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(4 086)	4	L8672c99
71	Lu XLIX	+48	Lutetium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(4 211)	4	L8672c99
71	Lu L	+49	Lutetium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(4 403)	4	L8672c99
71	Lu LI	+50	Lutetium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(4 532)	4	L8672c99
71	Lu LII	+51	Lutetium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(4 673)	4	L8672c99
71	Lu LIII	+52	Lutetium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(4 803)	4	L8672c99
71	Lu LIV	+53	Lutetium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(5 168)	5	L8672c99
71	Lu LV	+54	Lutetium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(5 282)	5	L8672c99
71	Lu LVI	+55	Lutetium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(5 408)	5	L8672c99
71	Lu LVII	+56	Lutetium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(5 525)	5	L8672c99
71	Lu LVIII	+57	Lutetium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(5 937)	6	L8672c99
71	Lu LIX	+58	Lutetium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(6 070)	6	L8672c99
71	Lu LX	+59	Lutetium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(6 326)	7	L8672c99
71	Lu LXI	+60	Lutetium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(6 452)	10	L8672c99
71	Lu LXII	+61	Lutetium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(14 228)	12	L8672c99
71	Lu LXIII	+62	Lutetium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(14 542)	15	L8672c99
71	Lu LXIV	+63	Lutetium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(14 890)	19	L8672c99
71	Lu LXV	+64	Lutetium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(15 211)	24	L8672c99
71	Lu LXVI	+65	Lutetium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(16 730)	30	L8672c99
71	Lu LXVII	+66	Lutetium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(17 120)	40	L8672c99
71	Lu LXVIII	+67	Lutetium	Be	1s²2s²	¹S₀	2s ²S_1/2	(17 610)	40	L8672c99
71	Lu LXIX	+68	Lutetium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(17 928.05)	0.16	L16264c99
71	Lu LXX	+69	Lutetium	He	1s²	¹S₀	1s ²S_1/2	(72 322.91)	0.22	L12128
71	Lu LXXI	+70	Lutetium	H	1s	²S_¹/₂		(73 804.8)	0.4	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Hf (all spectra) 72 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
72	Hf I	0	Hafnium	Hf	[Xe]4f¹⁴5d²6s²	³F₂	5d6s² ²D_3/2	6.825070	0.000012	L14027,L10033
72	Hf II	+1	Hafnium	Lu	[Xe]4f¹⁴5d6s²	²D_³/₂	5d² ³F₂	(14.61)	0.04	L19691
72	Hf III	+2	Hafnium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(22.55)	0.04	L19691
72	Hf IV	+3	Hafnium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	[33.370]	0.025	L3654
72	Hf V	+4	Hafnium	Er	[Xe]4f¹⁴	¹S₀	4f¹³5p⁶ ²F°_7/2	[68.37]	0.04	L3654
72	Hf VI	+5	Hafnium	Ho	[Xe]4f¹³	²F°_⁷/₂	4f¹³5p⁵	(98)	5	L582
72	Hf VII	+6	Hafnium	Dy	[Cd]4f¹³5p⁵		4f¹³5p⁴°	(118)	6	L582
72	Hf VIII	+7	Hafnium	Tb	[Cd]4f¹³5p⁴	°	4f¹³5p³	(137)	7	L582
72	Hf IX	+8	Hafnium	Gd	[Cd]4f¹³5p³		4f¹³5p² ⁴F°_7/2	(157)	8	L582
72	Hf X	+9	Hafnium	Eu	[Cd]4f¹³5p²	⁴F°_⁷/₂	4f¹²5p²	(187)	9	L582
72	Hf XI	+10	Hafnium	Sm	[Cd]4f¹²5p²		4f¹²5s²5p°	(209)	10	L582
72	Hf XII	+11	Hafnium	Pm	[Cd]4f¹²5p	°	4f¹²5s² ³H₆	(230)	12	L582
72	Hf XIII	+12	Hafnium	Nd	[Cd]4f¹²	³H₆	4f¹¹5s² ⁴I°_15/2	(270)	14	L582
72	Hf XIV	+13	Hafnium	Pr	[Cd]4f¹¹	⁴I°_¹⁵/₂	4f¹¹5s ⁵I°₄	(310)	15	L582
72	Hf XV	+14	Hafnium	Ce	[Kr]4d¹⁰4f¹¹5s	⁵I°₈	4f¹¹°	(334)	16	L582
72	Hf XVI	+15	Hafnium	La	[Kr]4d¹⁰4f¹¹	°	4f¹⁰	(359)	17	L582
72	Hf XVII	+16	Hafnium	Ba	[Kr]4d¹⁰4f¹⁰		4f⁹ ⁶H°_15/2	(399)	20	L582
72	Hf XVIII	+17	Hafnium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(440)	22	L582
72	Hf XIX	+18	Hafnium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(481)	24	L582
72	Hf XX	+19	Hafnium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(520)	30	L582
72	Hf XXI	+20	Hafnium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(570)	30	L582
72	Hf XXII	+21	Hafnium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(610)	30	L582
72	Hf XXIII	+22	Hafnium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(650)	30	L582
72	Hf XXIV	+23	Hafnium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(690)	30	L582
72	Hf XXV	+24	Hafnium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(730)	40	L582
72	Hf XXVI	+25	Hafnium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(772)	9	L582c99
72	Hf XXVII	+26	Hafnium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(1 002)	4	L8672c99
72	Hf XXVIII	+27	Hafnium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(1 047)	4	L8672c99
72	Hf XXIX	+28	Hafnium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(1 094)	4	L8672c99
72	Hf XXX	+29	Hafnium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(1 146)	4	L8672c99
72	Hf XXXI	+30	Hafnium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(1 195)	4	L8672c99
72	Hf XXXII	+31	Hafnium	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(1 245)	4	L8672c99
72	Hf XXXIII	+32	Hafnium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(1 311)	4	L8672c99
72	Hf XXXIV	+33	Hafnium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(1 362)	5	L8672c99
72	Hf XXXV	+34	Hafnium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(1 417)	5	L8672c99
72	Hf XXXVI	+35	Hafnium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(1 467)	5	L8672c99
72	Hf XXXVII	+36	Hafnium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(1 669)	5	L8672c99
72	Hf XXXVIII	+37	Hafnium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(1 719)	4	L8672c99
72	Hf XXXIX	+38	Hafnium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(1 776)	4	L8672c99
72	Hf XL	+39	Hafnium	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(1 827)	4	L8672c99
72	Hf XLI	+40	Hafnium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(1 963)	4	L8672c99
72	Hf XLII	+41	Hafnium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(2 022)	4	L8672c99
72	Hf XLIII	+42	Hafnium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(2 159)	4	L8672c99
72	Hf XLIV	+43	Hafnium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[2 218.9]	1.1	L10278
72	Hf XLV	+44	Hafnium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(3 741)	4	L8672c99
72	Hf XLVI	+45	Hafnium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(3 858)	4	L8672c99
72	Hf XLVII	+46	Hafnium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(3 984)	4	L8672c99
72	Hf XLVIII	+47	Hafnium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(4 118)	4	L8672c99
72	Hf XLIX	+48	Hafnium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(4 246)	4	L8672c99
72	Hf L	+49	Hafnium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(4 372)	4	L8672c99
72	Hf LI	+50	Hafnium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(4 573)	4	L8672c99
72	Hf LII	+51	Hafnium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(4 703)	4	L8672c99
72	Hf LIII	+52	Hafnium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(4 846)	4	L8672c99
72	Hf LIV	+53	Hafnium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(4 980)	5	L8672c99
72	Hf LV	+54	Hafnium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(5 350)	5	L8672c99
72	Hf LVI	+55	Hafnium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(5 468)	5	L8672c99
72	Hf LVII	+56	Hafnium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(5 595)	5	L8672c99
72	Hf LVIII	+57	Hafnium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(5 713)	6	L8672c99
72	Hf LIX	+58	Hafnium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(6 149)	6	L8672c99
72	Hf LX	+59	Hafnium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(6 284)	7	L8672c99
72	Hf LXI	+60	Hafnium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(6 545)	10	L8672c99
72	Hf LXII	+61	Hafnium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(6 674)	12	L8672c99
72	Hf LXIII	+62	Hafnium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(14 678)	15	L8672c99
72	Hf LXIV	+63	Hafnium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(14 999)	19	L8672c99
72	Hf LXV	+64	Hafnium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(15 351)	24	L8672c99
72	Hf LXVI	+65	Hafnium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(15 680)	30	L8672c99
72	Hf LXVII	+66	Hafnium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(17 280)	40	L8672c99
72	Hf LXVIII	+67	Hafnium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(17 680)	40	L8672c99
72	Hf LXIX	+68	Hafnium	Be	1s²2s²	¹S₀	2s ²S_1/2	(18 180)	50	L8672c99
72	Hf LXX	+69	Hafnium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(18 502.32)	0.17	L16264c99
72	Hf LXXI	+70	Hafnium	He	1s²	¹S₀	1s ²S_1/2	(74 565.93)	0.09	L12128
72	Hf LXXII	+71	Hafnium	H	1s	²S_¹/₂		(76 077.8)	0.4	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Ta (all spectra) 73 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
73	Ta I	0	Tantalum	Ta	[Xe]4f¹⁴5d³6s²	⁴F_³/₂	5d³6s ⁵F₁	7.549571	0.000025	L13153
73	Ta II	+1	Tantalum	Hf	[Xe]4f¹⁴5d³6s	⁵F₁	5d³ ⁴F_3/2	[16.2]	0.5	L16139
73	Ta III	+2	Tantalum	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(23.1)	1.6	L8672c99
73	Ta IV	+3	Tantalum	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(35.0)	1.7	L8672c99
73	Ta V	+4	Tantalum	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	[48.272]	0.025	L3654
73	Ta VI	+5	Tantalum	Er	[Xe]4f¹⁴	¹S₀	4f¹³5p⁶ ²F°_7/2	[94.01]	0.05	L3654
73	Ta VII	+6	Tantalum	Ho	[Xe]4f¹³	²F°_⁷/₂	4f¹³5p⁵	(119)	6	L582
73	Ta VIII	+7	Tantalum	Dy	[Cd]4f¹³5p⁵		4f¹³5p⁴°	(139)	7	L582
73	Ta IX	+8	Tantalum	Tb	[Cd]4f¹³5p⁴	°	4f¹³5p³	(159)	8	L582
73	Ta X	+9	Tantalum	Gd	[Cd]4f¹³5p³		4f¹³5p² ⁴F°_7/2	(180)	9	L582
73	Ta XI	+10	Tantalum	Eu	[Cd]4f¹³5p²	⁴F°_⁷/₂	4f¹³5p	(213)	11	L582
73	Ta XII	+11	Tantalum	Sm	[Cd]4f¹³5p		4f¹³5s² ²F°_7/2	(235)	12	L582
73	Ta XIII	+12	Tantalum	Pm	[Cd]4f¹³	²F°_⁷/₂	4f¹²5s² ³H₆	(262)	14	L582
73	Ta XIV	+13	Tantalum	Nd	[Cd]4f¹²	³H₆	4f¹¹5s² ⁴I°_15/2	(304)	15	L582
73	Ta XV	+14	Tantalum	Pr	[Cd]4f¹¹	⁴I°_¹⁵/₂	4f¹¹5s ⁵I°₄	(338)	17	L582
73	Ta XVI	+15	Tantalum	Ce	[Kr]4d¹⁰4f¹¹5s	⁵I°₈	4f¹¹°	(363)	19	L582
73	Ta XVII	+16	Tantalum	La	[Kr]4d¹⁰4f¹¹	°	4f¹⁰	(396)	20	L582
73	Ta XVIII	+17	Tantalum	Ba	[Kr]4d¹⁰4f¹⁰		4f⁹ ⁶H°_15/2	(439)	22	L582
73	Ta XIX	+18	Tantalum	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(482)	24	L582
73	Ta XX	+19	Tantalum	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(530)	30	L582
73	Ta XXI	+20	Tantalum	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(570)	30	L582
73	Ta XXII	+21	Tantalum	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(610)	30	L582
73	Ta XXIII	+22	Tantalum	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(660)	30	L582
73	Ta XXIV	+23	Tantalum	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(700)	30	L582
73	Ta XXV	+24	Tantalum	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(750)	40	L582
73	Ta XXVI	+25	Tantalum	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(790)	40	L582
73	Ta XXVII	+26	Tantalum	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(832)	10	L582c99
73	Ta XXVIII	+27	Tantalum	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(1 064)	4	L8672c99
73	Ta XXIX	+28	Tantalum	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(1 110)	4	L8672c99
73	Ta XXX	+29	Tantalum	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(1 160)	4	L8672c99
73	Ta XXXI	+30	Tantalum	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(1 211)	4	L8672c99
73	Ta XXXII	+31	Tantalum	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁶S_5/2	(1 262)	4	L8672c99
73	Ta XXXIII	+32	Tantalum	Nb	[Kr]4d⁵	⁶S_⁵/₂	4d⁴ ⁵D₀	(1 313)	4	L8672c99
73	Ta XXXIV	+33	Tantalum	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(1 382)	5	L8672c99
73	Ta XXXV	+34	Tantalum	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(1 434)	5	L8672c99
73	Ta XXXVI	+35	Tantalum	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(1 490)	5	L8672c99
73	Ta XXXVII	+36	Tantalum	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(1 542)	5	L8672c99
73	Ta XXXVIII	+37	Tantalum	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(1 748)	4	L8672c99
73	Ta XXXIX	+38	Tantalum	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(1 799)	4	L8672c99
73	Ta XL	+39	Tantalum	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ⁴S°_3/2	(1 857)	4	L8672c99
73	Ta XLI	+40	Tantalum	As	[Ar]3d¹⁰4s²4p³	⁴S°_³/₂	4p² ³P₀	(1 910)	4	L8672c99
73	Ta XLII	+41	Tantalum	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(2 053)	4	L8672c99
73	Ta XLIII	+42	Tantalum	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(2 113)	4	L8672c99
73	Ta XLIV	+43	Tantalum	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(2 254)	4	L8672c99
73	Ta XLV	+44	Tantalum	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[2 314.7]	1.9	L5473
73	Ta XLVI	+45	Tantalum	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	3 898.7	2.5	L10191
73	Ta XLVII	+46	Tantalum	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(4 014)	4	L8672c99
73	Ta XLVIII	+47	Tantalum	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(4 143)	4	L8672c99
73	Ta XLIX	+48	Tantalum	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(4 278)	4	L8672c99
73	Ta L	+49	Tantalum	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(4 410)	4	L8672c99
73	Ta LI	+50	Tantalum	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(4 537)	4	L8672c99
73	Ta LII	+51	Tantalum	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(4 745)	4	L8672c99
73	Ta LIII	+52	Tantalum	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(4 877)	4	L8672c99
73	Ta LIV	+53	Tantalum	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(5 024)	5	L8672c99
73	Ta LV	+54	Tantalum	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(5 159)	5	L8672c99
73	Ta LVI	+55	Tantalum	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(5 537)	5	L8672c99
73	Ta LVII	+56	Tantalum	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(5 655)	5	L8672c99
73	Ta LVIII	+57	Tantalum	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(5 785)	6	L8672c99
73	Ta LIX	+58	Tantalum	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(5 907)	6	L8672c99
73	Ta LX	+59	Tantalum	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(6 364)	7	L8672c99
73	Ta LXI	+60	Tantalum	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(6 502)	10	L8672c99
73	Ta LXII	+61	Tantalum	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(6 769)	12	L8672c99
73	Ta LXIII	+62	Tantalum	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(6 900)	15	L8672c99
73	Ta LXIV	+63	Tantalum	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(15 137)	19	L8672c99
73	Ta LXV	+64	Tantalum	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(15 461)	24	L8672c99
73	Ta LXVI	+65	Tantalum	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(15 820)	30	L8672c99
73	Ta LXVII	+66	Tantalum	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(16 150)	40	L8672c99
73	Ta LXVIII	+67	Tantalum	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(17 840)	40	L8672c99
73	Ta LXIX	+68	Tantalum	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(18 250)	50	L8672c99
73	Ta LXX	+69	Tantalum	Be	1s²2s²	¹S₀	2s ²S_1/2	(18 760)	50	L8672c99
73	Ta LXXI	+70	Tantalum	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(19 088.51)	0.19	L16264c99
73	Ta LXXII	+71	Tantalum	He	1s²	¹S₀	1s ²S_1/2	(76 852.03)	0.10	L12128
73	Ta LXXIII	+72	Tantalum	H	1s	²S_¹/₂		(78 394.7)	0.5	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data W (all spectra) 74 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
74	W I	0	Tungsten	W	[Xe]4f¹⁴5d⁴6s²	⁵D₀	5d⁴6s ⁶D_1/2	7.86403	0.00010	L11604
74	W II	+1	Tungsten	Ta	[Xe]4f¹⁴5d⁴6s	⁶D_¹/₂	5d⁴ ⁵D₀	[16.37]	0.15	L12177
74	W III	+2	Tungsten	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	[26.0]	0.4	L9087
74	W IV	+3	Tungsten	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	[38.2]	0.4	L9087
74	W V	+4	Tungsten	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	[51.6]	0.3	L9087
74	W VI	+5	Tungsten	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	[64.77]	0.04	L4597
74	W VII	+6	Tungsten	Er	[Xe]4f¹⁴	¹S₀	4f¹³5p⁶ ²F°_7/2	[122.01]	0.06	L3694
74	W VIII	+7	Tungsten	Ho	[Xe]4f¹³	²F°_⁷/₂	4f¹⁴5p⁴ ³P₂	[141.2]	1.2	L9087
74	W IX	+8	Tungsten	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	[160.2]	1.2	L9087
74	W X	+9	Tungsten	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	[179.0]	1.2	L9087
74	W XI	+10	Tungsten	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹³5p² ⁴F°_7/2	[208.9]	1.2	L9087
74	W XII	+11	Tungsten	Eu	[Cd]4f¹³5p²	⁴F°_⁷/₂	4f¹⁴ ¹S₀	[231.6]	1.2	L9087
74	W XIII	+12	Tungsten	Sm	[Cd]4f¹⁴	¹S₀	4f¹³5s² ²F°_7/2	[258.3]	1.2	L9087
74	W XIV	+13	Tungsten	Pm	[Cd]4f¹³	²F°_⁷/₂	4f¹²5s² ³H₆	[290.7]	1.2	L9087
74	W XV	+14	Tungsten	Nd	[Cd]4f¹²	³H₆	4f¹¹5s² ⁴I°_15/2	[325.3]	1.5	L9087
74	W XVI	+15	Tungsten	Pr	[Cd]4f¹¹	⁴I°_¹⁵/₂	4f¹¹5s ⁵I°₈	[361.9]	1.5	L9087
74	W XVII	+16	Tungsten	Ce	[Kr]4d¹⁰4f¹¹5s	⁵I°₈	4f¹¹ ⁴I°_15/2	[387.9]	1.2	L9087
74	W XVIII	+17	Tungsten	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	[420.7]	1.4	L9087
74	W XIX	+18	Tungsten	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	[462.1]	1.4	L9087
74	W XX	+19	Tungsten	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	[502.6]	1.4	L9087
74	W XXI	+20	Tungsten	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	[543.4]	1.4	L9087
74	W XXII	+21	Tungsten	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	[594.5]	1.5	L9087
74	W XXIII	+22	Tungsten	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	[640.6]	1.5	L9087
74	W XXIV	+23	Tungsten	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	[685.6]	1.6	L9087
74	W XXV	+24	Tungsten	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	[734.1]	1.7	L9087
74	W XXVI	+25	Tungsten	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	[784.4]	1.9	L9087
74	W XXVII	+26	Tungsten	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	[833.4]	1.9	L9087
74	W XXVIII	+27	Tungsten	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	[881.4]	1.6	L9087
74	W XXIX	+28	Tungsten	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	[1 132.2]	1.4	L9087
74	W XXX	+29	Tungsten	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	[1 180.0]	1.4	L9087
74	W XXXI	+30	Tungsten	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	[1 230.4]	1.4	L9087
74	W XXXII	+31	Tungsten	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	[1 283.4]	1.4	L9087
74	W XXXIII	+32	Tungsten	Mo	[Kr]4d⁶	⁵D₄	4d⁵ ⁴P_5/2	[1 335.1]	1.4	L9087
74	W XXXIV	+33	Tungsten	Nb	[Kr]4d⁵	⁴P_⁵/₂	4d⁴ ³P1₀	[1 386.8]	1.4	L9087
74	W XXXV	+34	Tungsten	Zr	[Kr]4d⁴	³P1₀	4d³ ⁴F_3/2	[1 459.9]	1.5	L9087
74	W XXXVI	+35	Tungsten	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	[1 512.4]	1.5	L9087
74	W XXXVII	+36	Tungsten	Sr	[Kr]4d²	³F₂	4d ²D_3/2	[1 569.1]	1.5	L9087
74	W XXXVIII	+37	Tungsten	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	[1 621.7]	1.5	L9087
74	W XXXIX	+38	Tungsten	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	[1 829.8]	1.9	L9087
74	W XL	+39	Tungsten	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	[1 882.9]	2.0	L9087
74	W XLI	+40	Tungsten	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³ ²D°_3/2	[1 940.6]	2.0	L9087
74	W XLII	+41	Tungsten	As	[Ar]3d¹⁰4s²4p³	²D°_³/₂	4p² ³P₀	[1 994.8]	2.0	L9087
74	W XLIII	+42	Tungsten	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	[2 149.1]	2.1	L9087
74	W XLIV	+43	Tungsten	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	[2 210.0]	1.5	L9087
74	W XLV	+44	Tungsten	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	[2 354.5]	1.4	L9087
74	W XLVI	+45	Tungsten	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[2 414.1]	0.4	L10257
74	W XLVII	+46	Tungsten	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	4 057	3	L10191
74	W XLVIII	+47	Tungsten	Co	[Ar]3d⁹	²D_⁵/₂	3d⁴_3/23d⁴_5/2 (0,4)₄	[4 180]	4	L9087
74	W XLIX	+48	Tungsten	Fe	[Ar]3d⁸	(0,4)₄	3d⁴_3/23d³_5/2 (0,9/2)_9/2	[4 309]	4	L9087
74	W L	+49	Tungsten	Mn	[Ar]3d⁷	(0,⁹/₂)_⁹/₂	3d⁴_3/23d²_5/2 (0,4)₄	[4 446]	4	L9087
74	W LI	+50	Tungsten	Cr	[Ar]3d⁶	(0,4)₄	3d⁴_3/23d_5/2 (0,5/2)_5/2	[4 578]	4	L9087
74	W LII	+51	Tungsten	V	[Ar]3d⁵	(0,⁵/₂)_⁵/₂	3d⁴_3/2 (0,0)₀	[4 709]	4	L9087
74	W LIII	+52	Tungsten	Ti	[Ar]3d⁴	(0,0)₀	3d³ (3/2,0)_3/2	[4 927]	4	L9087
74	W LIV	+53	Tungsten	Sc	[Ar]3d³	(³/₂,0)_³/₂	3d² (3/2,3/2)₂	[5 063]	4	L14671
74	W LV	+54	Tungsten	Ca	[Ar]3d²	(³/₂,³/₂)₂	3d ²D_3/2	[5 209]	4	L9087
74	W LVI	+55	Tungsten	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	[5 348]	4	L9087
74	W LVII	+56	Tungsten	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	[5 719]	5	L9087
74	W LVIII	+57	Tungsten	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	[5 840]	5	L9087
74	W LIX	+58	Tungsten	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	[5 970]	5	L9087
74	W LX	+59	Tungsten	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	[6 093]	5	L9087
74	W LXI	+60	Tungsten	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	[6 596]	7	L14671
74	W LXII	+61	Tungsten	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	[6 735]	7	L9087
74	W LXIII	+62	Tungsten	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	[7 000]	7	L9087
74	W LXIV	+63	Tungsten	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	[7 130]	7	L9087
74	W LXV	+64	Tungsten	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	[15 566]	11	L9087
74	W LXVI	+65	Tungsten	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	[15 896]	11	L9087
74	W LXVII	+66	Tungsten	O	1s²2s²2p⁴	³P₂	2p³ ²P°_3/2	[16 252]	11	L14671
74	W LXVIII	+67	Tungsten	N	1s²2s²2p³	²P°_³/₂	2p² ³P₀	[16 588]	11	L9087
74	W LXIX	+68	Tungsten	C	1s²2s²2p²	³P₀	2p ²P°_1/2	[18 476]	4	L9087
74	W LXX	+69	Tungsten	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	[18 872]	3	L9087
74	W LXXI	+70	Tungsten	Be	1s²2s²	¹S₀	2s ²S_1/2	[19 362]	3	L9087
74	W LXXII	+71	Tungsten	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(19 686.74)	0.20	L16264c99
74	W LXXIII	+72	Tungsten	He	1s²	¹S₀	1s ²S_1/2	(79 181.94)	0.10	L12128
74	W LXXIV	+73	Tungsten	H	1s	²S_¹/₂		(80 755.6)	0.6	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Re (all spectra) 75 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
75	Re I	0	Rhenium	Re	[Xe]4f¹⁴5d⁵6s²	⁶S_⁵/₂	5d⁵6s ⁷S₃	7.83352	0.00011	L11604
75	Re II	+1	Rhenium	W	[Xe]4f¹⁴5d⁵6s	⁷S₃	5d⁵ ⁶S_5/2	[16.6]	0.5	L16139
75	Re III	+2	Rhenium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(27.0)	1.6	L8672c99
75	Re IV	+3	Rhenium	Hf	[Xe]4f¹⁴5d⁴	⁵D ₀	5d³ ⁴F_3/2	(39.1)	1.7	L8672c99
75	Re V	+4	Rhenium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(51.9)	1.9	L8672c99
75	Re VI	+5	Rhenium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(67.0)	2.0	L8672c99
75	Re VII	+6	Rhenium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	[82.71]	0.05	L4597
75	Re VIII	+7	Rhenium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	[144.4]	0.4	L3654
75	Re IX	+8	Rhenium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(165)	8	L582
75	Re X	+9	Rhenium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(187)	9	L582
75	Re XI	+10	Rhenium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(208)	10	L582
75	Re XII	+11	Rhenium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹³5p² ⁴F°_7/2	(236)	12	L582
75	Re XIII	+12	Rhenium	Eu	[Cd]4f¹³5p²	⁴F°_⁷/₂	4f¹³5p	(268)	14	L582
75	Re XIV	+13	Rhenium	Sm	[Cd]4f¹⁴		4f¹³5s² ²F°_7/2	(291)	15	L582
75	Re XV	+14	Rhenium	Pm	[Cd]4f¹³	²F°_⁷/₂	4f¹²5s² ³H₆	(330)	16	L582
75	Re XVI	+15	Rhenium	Nd	[Cd]4f¹²	³H₆	4f¹¹5s² ⁴I°_15/2	(377)	19	L582
75	Re XVII	+16	Rhenium	Pr	[Cd]4f¹¹	⁴I°_¹⁵/₂	4f¹²	(403)	20	L582
75	Re XVIII	+17	Rhenium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(429)	21	L582
75	Re XIX	+18	Rhenium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(476)	24	L582
75	Re XX	+19	Rhenium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(520)	30	L582
75	Re XXI	+20	Rhenium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(570)	30	L582
75	Re XXII	+21	Rhenium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(620)	30	L582
75	Re XXIII	+22	Rhenium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(670)	30	L582
75	Re XXIV	+23	Rhenium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(720)	40	L582
75	Re XXV	+24	Rhenium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(760)	40	L582
75	Re XXVI	+25	Rhenium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(810)	40	L582
75	Re XXVII	+26	Rhenium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(860)	40	L582
75	Re XXVIII	+27	Rhenium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(910)	50	L582
75	Re XXIX	+28	Rhenium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(953)	19	L582c99
75	Re XXX	+29	Rhenium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(1 194)	4	L8672c99
75	Re XXXI	+30	Rhenium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(1 242)	4	L8672c99
75	Re XXXII	+31	Rhenium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(1 294)	4	L8672c99
75	Re XXXIII	+32	Rhenium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(1 349)	4	L8672c99
75	Re XXXIV	+33	Rhenium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(1 402)	5	L8672c99
75	Re XXXV	+34	Rhenium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(1 454)	5	L8672c99
75	Re XXXVI	+35	Rhenium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(1 530)	5	L8672c99
75	Re XXXVII	+36	Rhenium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(1 583)	5	L8672c99
75	Re XXXVIII	+37	Rhenium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(1 641)	4	L8672c99
75	Re XXXIX	+38	Rhenium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(1 696)	4	L8672c99
75	Re XL	+39	Rhenium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(1 912)	4	L8672c99
75	Re XLI	+40	Rhenium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(1 966)	4	L8672c99
75	Re XLII	+41	Rhenium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(2 025)	4	L8672c99
75	Re XLIII	+42	Rhenium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(2 080)	4	L8672c99
75	Re XLIV	+43	Rhenium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(2 240)	4	L8672c99
75	Re XLV	+44	Rhenium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(2 302)	4	L8672c99
75	Re XLVI	+45	Rhenium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(2 450)	4	L8672c99
75	Re XLVII	+46	Rhenium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[2 514.5]	0.3	L10257
75	Re XLVIII	+47	Rhenium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	4 214	4	L10191
75	Re XLIX	+48	Rhenium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(4 335)	4	L8672c99
75	Re L	+49	Rhenium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(4 468)	4	L8672c99
75	Re LI	+50	Rhenium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(4 609)	4	L8672c99
75	Re LII	+51	Rhenium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(4 745)	4	L8672c99
75	Re LIII	+52	Rhenium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(4 877)	4	L8672c99
75	Re LIV	+53	Rhenium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(5 099)	5	L8672c99
75	Re LV	+54	Rhenium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(5 236)	5	L8672c99
75	Re LVI	+55	Rhenium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(5 388)	5	L8672c99
75	Re LVII	+56	Rhenium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(5 528)	5	L8672c99
75	Re LVIII	+57	Rhenium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(5 919)	6	L8672c99
75	Re LIX	+58	Rhenium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(6 042)	6	L8672c99
75	Re LX	+59	Rhenium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(6 176)	7	L8672c99
75	Re LXI	+60	Rhenium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(6 300)	10	L8672c99
75	Re LXII	+61	Rhenium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(6 810)	12	L8672c99
75	Re LXIII	+62	Rhenium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(6 952)	15	L8672c99
75	Re LXIV	+63	Rhenium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(7 230)	19	L8672c99
75	Re LXV	+64	Rhenium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(7 366)	24	L8672c99
75	Re LXVI	+65	Rhenium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(16 080)	30	L8672c99
75	Re LXVII	+66	Rhenium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(16 410)	40	L8672c99
75	Re LXVIII	+67	Rhenium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(16 780)	40	L8672c99
75	Re LXIX	+68	Rhenium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(17 120)	50	L8672c99
75	Re LXX	+69	Rhenium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(19 000)	50	L8672c99
75	Re LXXI	+70	Rhenium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(19 420)	60	L8672c99
75	Re LXXII	+71	Rhenium	Be	1s²2s²	¹S₀	2s ²S_1/2	(19 950)	60	L8672c99
75	Re LXXIII	+72	Rhenium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(20 297.40)	0.21	L16264c99
75	Re LXXIV	+73	Rhenium	He	1s²	¹S₀	1s ²S_1/2	(81 556.90)	0.17	L12128
75	Re LXXV	+74	Rhenium	H	1s	²S_¹/₂		(83 162.3)	0.6	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Os (all spectra) 76 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
76	Os I	0	Osmium	Os	[Xe]4f¹⁴5d⁶6s²	⁵D₄	5d⁶6s ⁶D_9/2	8.43823	0.00020	L8105
76	Os II	+1	Osmium	Re	[Xe]4f¹⁴5d⁶6s	⁶D_⁹/₂	5d⁵6s ⁷S₃	[17.0]	1.0	L16139
76	Os III	+2	Osmium	W	[Xe]4f¹⁴5d⁵6s	⁵D₄	5d⁵ ⁶S_5/2	(25.0)	1.6	L8672c99
76	Os IV	+3	Osmium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(41.0)	1.7	L8672c99
76	Os V	+4	Osmium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(55.0)	1.9	L8672c99
76	Os VI	+5	Osmium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(70.1)	2.0	L8672c99
76	Os VII	+6	Osmium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(85.1)	2.0	L8672c99
76	Os VIII	+7	Osmium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	[102.02]	0.07	L4597
76	Os IX	+8	Osmium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	[168.7]	0.5	L3654
76	Os X	+9	Osmium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(190)	10	L582
76	Os XI	+10	Osmium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(213)	11	L582
76	Os XII	+11	Osmium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(235)	12	L582
76	Os XIII	+12	Osmium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹³5p² ⁴F°_7/2	(269)	14	L582
76	Os XIV	+13	Osmium	Eu	[Cd]4f¹³5p²	⁴F°_⁷/₂	4f¹³5p	(298)	15	L582
76	Os XV	+14	Osmium	Sm	[Cd]4f¹⁴		4f¹³5s² ²F°_7/2	(322)	16	L582
76	Os XVI	+15	Osmium	Pm	[Cd]4f¹³	²F°_⁷/₂	4f¹²5s² ³H₆	(367)	19	L582
76	Os XVII	+16	Osmium	Nd	[Cd]4f¹²	³H₆	4f¹²5s	(410)	21	L582
76	Os XVIII	+17	Osmium	Pr	[Kr]4d¹⁰4f¹²5s		4f¹²	(436)	22	L582
76	Os XIX	+18	Osmium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(470)	24	L582
76	Os XX	+19	Osmium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(520)	30	L582
76	Os XXI	+20	Osmium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(570)	30	L582
76	Os XXII	+21	Osmium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(620)	30	L582
76	Os XXIII	+22	Osmium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(670)	30	L582
76	Os XXIV	+23	Osmium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(720)	40	L582
76	Os XXV	+24	Osmium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(770)	40	L582
76	Os XXVI	+25	Osmium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(820)	40	L582
76	Os XXVII	+26	Osmium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(870)	40	L582
76	Os XXVIII	+27	Osmium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(920)	50	L582
76	Os XXIX	+28	Osmium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(970)	50	L582
76	Os XXX	+29	Osmium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(1 015)	25	L582c99
76	Os XXXI	+30	Osmium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(1 262)	4	L8672c99
76	Os XXXII	+31	Osmium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(1 311)	4	L8672c99
76	Os XXXIII	+32	Osmium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(1 364)	4	L8672c99
76	Os XXXIV	+33	Osmium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(1 420)	5	L8672c99
76	Os XXXV	+34	Osmium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(1 474)	5	L8672c99
76	Os XXXVI	+35	Osmium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(1 528)	5	L8672c99
76	Os XXXVII	+36	Osmium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(1 606)	5	L8672c99
76	Os XXXVIII	+37	Osmium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(1 660)	4	L8672c99
76	Os XXXIX	+38	Osmium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(1 720)	4	L8672c99
76	Os XL	+39	Osmium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(1 776)	4	L8672c99
76	Os XLI	+40	Osmium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(1 996)	4	L8672c99
76	Os XLII	+41	Osmium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(2 052)	4	L8672c99
76	Os XLIII	+42	Osmium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(2 112)	4	L8672c99
76	Os XLIV	+43	Osmium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(2 168)	4	L8672c99
76	Os XLV	+44	Osmium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(2 336)	4	L8672c99
76	Os XLVI	+45	Osmium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(2 400)	4	L8672c99
76	Os XLVII	+46	Osmium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(2 552)	4	L8672c99
76	Os XLVIII	+47	Osmium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[2 615.5]	1.4	L10278
76	Os XLIX	+48	Osmium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(4 374)	4	L8672c99
76	Os L	+49	Osmium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(4 501)	4	L8672c99
76	Os LI	+50	Osmium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(4 635)	4	L8672c99
76	Os LII	+51	Osmium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(4 779)	4	L8672c99
76	Os LIII	+52	Osmium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(4 917)	4	L8672c99
76	Os LIV	+53	Osmium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(5 052)	5	L8672c99
76	Os LV	+54	Osmium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(5 280)	5	L8672c99
76	Os LVI	+55	Osmium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(5 421)	5	L8672c99
76	Os LVII	+56	Osmium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(5 575)	5	L8672c99
76	Os LVIII	+57	Osmium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(5 717)	6	L8672c99
76	Os LIX	+58	Osmium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(6 115)	6	L8672c99
76	Os LX	+59	Osmium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(6 240)	7	L8672c99
76	Os LXI	+60	Osmium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(6 376)	10	L8672c99
76	Os LXII	+61	Osmium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(6 503)	12	L8672c99
76	Os LXIII	+62	Osmium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(7 039)	15	L8672c99
76	Os LXIV	+63	Osmium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(7 185)	19	L8672c99
76	Os LXV	+64	Osmium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(7 468)	24	L8672c99
76	Os LXVI	+65	Osmium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(7 610)	30	L8672c99
76	Os LXVII	+66	Osmium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(16 560)	40	L8672c99
76	Os LXVIII	+67	Osmium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(16 900)	40	L8672c99
76	Os LXIX	+68	Osmium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(17 270)	50	L8672c99
76	Os LXX	+69	Osmium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(17 620)	50	L8672c99
76	Os LXXI	+70	Osmium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(19 600)	60	L8672c99
76	Os LXXII	+71	Osmium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(20 030)	60	L8672c99
76	Os LXXIII	+72	Osmium	Be	1s²2s²	¹S₀	2s ²S_1/2	(20 570)	70	L8672c99
76	Os LXXIV	+73	Osmium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(20 920.60)	0.22	L16264c99
76	Os LXXV	+74	Osmium	He	1s²	¹S₀	1s ²S_1/2	(83 976.21)	0.12	L12128
76	Os LXXVI	+75	Osmium	H	1s	²S_¹/₂		(85 614.4)	0.6	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Ir (all spectra) 77 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
77	Ir I	0	Iridium	Ir	[Xe]4f¹⁴5d⁷6s²	⁴F_⁹/₂	5d⁷6s ⁵F₅	8.96702	0.00022	L8105
77	Ir II	+1	Iridium	Os	[Xe]4f¹⁴5d⁷6s	⁵F₅	5d⁷ ⁴F_9/2	[17.0]	0.3	L16139
77	Ir III	+2	Iridium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(28.0)	1.6	L8672c99
77	Ir IV	+3	Iridium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(40.0)	1.7	L8672c99
77	Ir V	+4	Iridium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(57.0)	1.9	L8672c99
77	Ir VI	+5	Iridium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(72.0)	2.0	L8672c99
77	Ir VII	+6	Iridium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(89.0)	2.0	L8672c99
77	Ir VIII	+7	Iridium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(105.0)	2.1	L8672c99
77	Ir IX	+8	Iridium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	[122.7]	0.9	L3654
77	Ir X	+9	Iridium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	[194.8]	0.6	L3654
77	Ir XI	+10	Iridium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(217)	11	L582
77	Ir XII	+11	Iridium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(240)	12	L582
77	Ir XIII	+12	Iridium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(264)	14	L582
77	Ir XIV	+13	Iridium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(303)	15	L582
77	Ir XV	+14	Iridium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(329)	16	L582
77	Ir XVI	+15	Iridium	Sm	[Cd]4f¹⁴	¹S₀	4f¹³5s² ²F°_7/2	(356)	17	L582
77	Ir XVII	+16	Iridium	Pm	[Cd]4f¹³	²F°_⁷/₂	4f¹²5s² ³H₆	(407)	20	L582
77	Ir XVIII	+17	Iridium	Nd	[Cd]4f¹²	³H₆	4f¹²5s	(445)	22	L582
77	Ir XIX	+18	Iridium	Pr	[Kr]4d¹⁰4f¹²5s		4f¹²	(472)	24	L582
77	Ir XX	+19	Iridium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(510)	30	L582
77	Ir XXI	+20	Iridium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(560)	30	L582
77	Ir XXII	+21	Iridium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(610)	30	L582
77	Ir XXIII	+22	Iridium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(670)	30	L582
77	Ir XXIV	+23	Iridium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(720)	40	L582
77	Ir XXV	+24	Iridium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(770)	40	L582
77	Ir XXVI	+25	Iridium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(820)	40	L582
77	Ir XXVII	+26	Iridium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(870)	40	L582
77	Ir XXVIII	+27	Iridium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(920)	50	L582
77	Ir XXIX	+28	Iridium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(980)	50	L582
77	Ir XXX	+29	Iridium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(1 030)	50	L582
77	Ir XXXI	+30	Iridium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(1 080)	50	L582
77	Ir XXXII	+31	Iridium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(1 331)	4	L8672c99
77	Ir XXXIII	+32	Iridium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(1 381)	4	L8672c99
77	Ir XXXIV	+33	Iridium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(1 436)	5	L8672c99
77	Ir XXXV	+34	Iridium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(1 493)	5	L8672c99
77	Ir XXXVI	+35	Iridium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(1 548)	5	L8672c99
77	Ir XXXVII	+36	Iridium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(1 603)	5	L8672c99
77	Ir XXXVIII	+37	Iridium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(1 684)	4	L8672c99
77	Ir XXXIX	+38	Iridium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(1 739)	4	L8672c99
77	Ir XL	+39	Iridium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(1 801)	4	L8672c99
77	Ir XLI	+40	Iridium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(1 857)	4	L8672c99
77	Ir XLII	+41	Iridium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(2 083)	4	L8672c99
77	Ir XLIII	+42	Iridium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(2 139)	4	L8672c99
77	Ir XLIV	+43	Iridium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(2 201)	4	L8672c99
77	Ir XLV	+44	Iridium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(2 258)	4	L8672c99
77	Ir XLVI	+45	Iridium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(2 435)	4	L8672c99
77	Ir XLVII	+46	Iridium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(2 500)	4	L8672c99
77	Ir XLVIII	+47	Iridium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(2 656)	4	L8672c99
77	Ir XLIX	+48	Iridium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[2 720.4]	1.4	L10278
77	Ir L	+49	Iridium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(4 540)	4	L8672c99
77	Ir LI	+50	Iridium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(4 668)	4	L8672c99
77	Ir LII	+51	Iridium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(4 806)	4	L8672c99
77	Ir LIII	+52	Iridium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(4 952)	4	L8672c99
77	Ir LIV	+53	Iridium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(5 092)	5	L8672c99
77	Ir LV	+54	Iridium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(5 229)	5	L8672c99
77	Ir LVI	+55	Iridium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(5 466)	5	L8672c99
77	Ir LVII	+56	Iridium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(5 609)	5	L8672c99
77	Ir LVIII	+57	Iridium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(5 765)	6	L8672c99
77	Ir LIX	+58	Iridium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(5 910)	6	L8672c99
77	Ir LX	+59	Iridium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(6 315)	7	L8672c99
77	Ir LXI	+60	Iridium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(6 441)	10	L8672c99
77	Ir LXII	+61	Iridium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(6 580)	12	L8672c99
77	Ir LXIII	+62	Iridium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(6 708)	15	L8672c99
77	Ir LXIV	+63	Iridium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(7 274)	19	L8672c99
77	Ir LXV	+64	Iridium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(7 421)	24	L8672c99
77	Ir LXVI	+65	Iridium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(7 710)	30	L8672c99
77	Ir LXVII	+66	Iridium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(7 850)	40	L8672c99
77	Ir LXVIII	+67	Iridium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(17 040)	40	L8672c99
77	Ir LXIX	+68	Iridium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(17 390)	50	L8672c99
77	Ir LXX	+69	Iridium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(17 770)	50	L8672c99
77	Ir LXXI	+70	Iridium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(18 120)	60	L8672c99
77	Ir LXXII	+71	Iridium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(20 210)	60	L8672c99
77	Ir LXXIII	+72	Iridium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(20 650)	70	L8672c99
77	Ir LXXIV	+73	Iridium	Be	1s²2s²	¹S₀	2s ²S_1/2	(21 200)	90	L8672c99
77	Ir LXXV	+74	Iridium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(21 556.60)	0.24	L16264c99
77	Ir LXXVI	+75	Iridium	He	1s²	¹S₀	1s ²S_1/2	(86 438.9)	0.5	L10054
77	Ir LXXVII	+76	Iridium	H	1s	²S_¹/₂		(88 113.3)	0.6	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Pt (all spectra) 78 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
78	Pt I	0	Platinum	Pt	[Xe]4f¹⁴5d⁹6s	³D₃	5d⁹ ²D_5/2	8.95883	0.00010	L9735,L11689
78	Pt II	+1	Platinum	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	18.56	0.12	L3466,L3539
78	Pt III	+2	Platinum	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(29.0)	1.6	L8672c99
78	Pt IV	+3	Platinum	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(43.0)	1.7	L8672c99
78	Pt V	+4	Platinum	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(56.0)	1.9	L8672c99
78	Pt VI	+5	Platinum	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(75.0)	2.0	L8672c99
78	Pt VII	+6	Platinum	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(91.0)	2.0	L8672c99
78	Pt VIII	+7	Platinum	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(109.0)	2.1	L8672c99
78	Pt IX	+8	Platinum	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(126.0)	2.2	L8672c99
78	Pt X	+9	Platinum	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	[144.9]	1.1	L3654
78	Pt XI	+10	Platinum	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	[220.4]	0.9	L3654
78	Pt XII	+11	Platinum	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(245)	12	L582
78	Pt XIII	+12	Platinum	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(269)	14	L582
78	Pt XIV	+13	Platinum	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(293)	15	L582
78	Pt XV	+14	Platinum	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(332)	16	L582
78	Pt XVI	+15	Platinum	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(358)	17	L582
78	Pt XVII	+16	Platinum	Sm	[Cd]4f¹⁴	¹S₀	4f¹³5s² ²F°_7/2	(392)	20	L582
78	Pt XVIII	+17	Platinum	Pm	[Cd]4f¹³	²F°_⁷/₂	4f¹²5s² ³H₆	(445)	22	L582
78	Pt XIX	+18	Platinum	Nd	[Cd]4f¹²	³H₆	4f¹²5s	(479)	24	L582
78	Pt XX	+19	Platinum	Pr	[Kr]4d¹⁰4f¹²5s		4f¹²	(507)	25	L582
78	Pt XXI	+20	Platinum	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(550)	30	L582
78	Pt XXII	+21	Platinum	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(610)	30	L582
78	Pt XXIII	+22	Platinum	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(660)	30	L582
78	Pt XXIV	+23	Platinum	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(710)	40	L582
78	Pt XXV	+24	Platinum	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(760)	40	L582
78	Pt XXVI	+25	Platinum	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(820)	40	L582
78	Pt XXVII	+26	Platinum	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(870)	40	L582
78	Pt XXVIII	+27	Platinum	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(930)	50	L582
78	Pt XXIX	+28	Platinum	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(980)	50	L582
78	Pt XXX	+29	Platinum	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(1 040)	50	L582
78	Pt XXXI	+30	Platinum	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(1 090)	50	L582
78	Pt XXXII	+31	Platinum	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(1 140)	60	L582
78	Pt XXXIII	+32	Platinum	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(1 402)	4	L8672c99
78	Pt XXXIV	+33	Platinum	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(1 454)	5	L8672c99
78	Pt XXXV	+34	Platinum	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(1 509)	5	L8672c99
78	Pt XXXVI	+35	Platinum	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(1 567)	5	L8672c99
78	Pt XXXVII	+36	Platinum	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(1 624)	5	L8672c99
78	Pt XXXVIII	+37	Platinum	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(1 680)	4	L8672c99
78	Pt XXXIX	+38	Platinum	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(1 763)	4	L8672c99
78	Pt XL	+39	Platinum	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(1 821)	4	L8672c99
78	Pt XLI	+40	Platinum	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(1 883)	4	L8672c99
78	Pt XLII	+41	Platinum	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(1 941)	4	L8672c99
78	Pt XLIII	+42	Platinum	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(2 171)	4	L8672c99
78	Pt XLIV	+43	Platinum	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(2 228)	4	L8672c99
78	Pt XLV	+44	Platinum	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(2 291)	4	L8672c99
78	Pt XLVI	+45	Platinum	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(2 350)	4	L8672c99
78	Pt XLVII	+46	Platinum	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(2 536)	4	L8672c99
78	Pt XLVIII	+47	Platinum	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(2 603)	4	L8672c99
78	Pt XLIX	+48	Platinum	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(2 762)	4	L8672c99
78	Pt L	+49	Platinum	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[2 827.8]	1.4	L10278
78	Pt LI	+50	Platinum	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	4 715	4	L10191
78	Pt LII	+51	Platinum	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(4 839)	4	L8672c99
78	Pt LIII	+52	Platinum	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(4 980)	4	L8672c99
78	Pt LIV	+53	Platinum	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(5 128)	5	L8672c99
78	Pt LV	+54	Platinum	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(5 270)	5	L8672c99
78	Pt LVI	+55	Platinum	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(5 410)	5	L8672c99
78	Pt LVII	+56	Platinum	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(5 654)	5	L8672c99
78	Pt LVIII	+57	Platinum	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(5 800)	6	L8672c99
78	Pt LIX	+58	Platinum	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(5 959)	6	L8672c99
78	Pt LX	+59	Platinum	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(6 106)	7	L8672c99
78	Pt LXI	+60	Platinum	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(6 517)	10	L8672c99
78	Pt LXII	+61	Platinum	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(6 646)	12	L8672c99
78	Pt LXIII	+62	Platinum	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(6 787)	15	L8672c99
78	Pt LXIV	+63	Platinum	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(6 918)	19	L8672c99
78	Pt LXV	+64	Platinum	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(7 512)	24	L8672c99
78	Pt LXVI	+65	Platinum	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(7 660)	30	L8672c99
78	Pt LXVII	+66	Platinum	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(7 960)	40	L8672c99
78	Pt LXVIII	+67	Platinum	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(8 100)	40	L8672c99
78	Pt LXIX	+68	Platinum	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(17 540)	50	L8672c99
78	Pt LXX	+69	Platinum	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(17 890)	50	L8672c99
78	Pt LXXI	+70	Platinum	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(18 280)	60	L8672c99
78	Pt LXXII	+71	Platinum	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(18 630)	60	L8672c99
78	Pt LXXIII	+72	Platinum	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(20 840)	70	L8672c99
78	Pt LXXIV	+73	Platinum	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(21 280)	90	L8672c99
78	Pt LXXV	+74	Platinum	Be	1s²2s²	¹S₀	2s ²S_1/2	(21 840)	90	L8672c99
78	Pt LXXVI	+75	Platinum	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(22 205.7)	0.3	L16264c99
78	Pt LXXVII	+76	Platinum	He	1s²	¹S₀	1s ²S_1/2	(88 955.18)	0.15	L12128
78	Pt LXXVIII	+77	Platinum	H	1s	²S_¹/₂		(90 659.7)	0.7	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Au (all spectra) 79 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
79	Au I	0	Gold	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	9.225554	0.000004	L12088
79	Au II	+1	Gold	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	20.203	0.025	L11702
79	Au III	+2	Gold	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(30.0)	1.6	L8672c99
79	Au IV	+3	Gold	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(45.0)	1.7	L8672c99
79	Au V	+4	Gold	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(60.0)	1.9	L8672c99
79	Au VI	+5	Gold	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(74.0)	2.0	L8672c99
79	Au VII	+6	Gold	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(94.0)	2.0	L8672c99
79	Au VIII	+7	Gold	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(112.0)	2.1	L8672c99
79	Au IX	+8	Gold	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(130.1)	2.2	L8672c99
79	Au X	+9	Gold	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(149.0)	2.2	L8672c99
79	Au XI	+10	Gold	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	[168.2]	1.4	L3654
79	Au XII	+11	Gold	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	[248.0]	1.0	L3654
79	Au XIII	+12	Gold	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(275)	14	L582
79	Au XIV	+13	Gold	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(299)	15	L582
79	Au XV	+14	Gold	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(324)	16	L582
79	Au XVI	+15	Gold	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(365)	19	L582
79	Au XVII	+16	Gold	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(392)	20	L582
79	Au XVIII	+17	Gold	Sm	[Cd]4f¹⁴	¹S₀	4f¹³5s² ²F°_7/2	(433)	21	L582
79	Au XIX	+18	Gold	Pm	[Cd]4f¹³	²F°_⁷/₂	4f¹²5s² ³H₆	(487)	25	L582
79	Au XX	+19	Gold	Nd	[Cd]4f¹²	³H₆	4f¹²5s	(520)	30	L582
79	Au XXI	+20	Gold	Pr	[Kr]4d¹⁰4f¹²5s		4f¹²	(550)	30	L582
79	Au XXII	+21	Gold	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(600)	30	L582
79	Au XXIII	+22	Gold	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(650)	40	L582
79	Au XXIV	+23	Gold	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(710)	40	L582
79	Au XXV	+24	Gold	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(760)	40	L582
79	Au XXVI	+25	Gold	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(820)	40	L582
79	Au XXVII	+26	Gold	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(870)	40	L582
79	Au XXVIII	+27	Gold	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(930)	50	L582
79	Au XXIX	+28	Gold	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(990)	50	L582
79	Au XXX	+29	Gold	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(1 040)	50	L582
79	Au XXXI	+30	Gold	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(1 100)	50	L582
79	Au XXXII	+31	Gold	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(1 150)	60	L582
79	Au XXXIII	+32	Gold	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(1 210)	60	L582
79	Au XXXIV	+33	Gold	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(1 475)	5	L8672c99
79	Au XXXV	+34	Gold	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(1 527)	5	L8672c99
79	Au XXXVI	+35	Gold	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(1 584)	5	L8672c99
79	Au XXXVII	+36	Gold	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(1 644)	5	L8672c99
79	Au XXXVIII	+37	Gold	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(1 702)	4	L8672c99
79	Au XXXIX	+38	Gold	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(1 758)	4	L8672c99
79	Au XL	+39	Gold	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(1 845)	4	L8672c99
79	Au XLI	+40	Gold	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(1 904)	4	L8672c99
79	Au XLII	+41	Gold	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(1 967)	4	L8672c99
79	Au XLIII	+42	Gold	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(2 026)	4	L8672c99
79	Au XLIV	+43	Gold	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(2 261)	4	L8672c99
79	Au XLV	+44	Gold	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(2 320)	4	L8672c99
79	Au XLVI	+45	Gold	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(2 383)	4	L8672c99
79	Au XLVII	+46	Gold	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(2 443)	4	L8672c99
79	Au XLVIII	+47	Gold	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(2 640)	4	L8672c99
79	Au XLIX	+48	Gold	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(2 708)	4	L8672c99
79	Au L	+49	Gold	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(2 870)	4	L8672c99
79	Au LI	+50	Gold	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[2 941.0]	1.0	L10191
79	Au LII	+51	Gold	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	4 888	4	L10191
79	Au LIII	+52	Gold	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(5 013)	4	L8672c99
79	Au LIV	+53	Gold	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(5 156)	5	L8672c99
79	Au LV	+54	Gold	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(5 307)	5	L8672c99
79	Au LVI	+55	Gold	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(5 452)	5	L8672c99
79	Au LVII	+56	Gold	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(5 594)	5	L8672c99
79	Au LVIII	+57	Gold	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(5 846)	6	L8672c99
79	Au LIX	+58	Gold	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(5 994)	6	L8672c99
79	Au LX	+59	Gold	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(6 156)	7	L8672c99
79	Au LXI	+60	Gold	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(6 305)	10	L8672c99
79	Au LXII	+61	Gold	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(6 724)	12	L8672c99
79	Au LXIII	+62	Gold	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(6 854)	15	L8672c99
79	Au LXIV	+63	Gold	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(6 997)	19	L8672c99
79	Au LXV	+64	Gold	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(7 130)	24	L8672c99
79	Au LXVI	+65	Gold	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(7 760)	30	L8672c99
79	Au LXVII	+66	Gold	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(7 910)	40	L8672c99
79	Au LXVIII	+67	Gold	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(8 210)	40	L8672c99
79	Au LXIX	+68	Gold	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(8 360)	50	L8672c99
79	Au LXX	+69	Gold	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(18 040)	50	L8672c99
79	Au LXXI	+70	Gold	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(18 400)	60	L8672c99
79	Au LXXII	+71	Gold	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(18 790)	60	L8672c99
79	Au LXXIII	+72	Gold	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(19 150)	70	L8672c99
79	Au LXXIV	+73	Gold	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(21 470)	90	L8672c99
79	Au LXXV	+74	Gold	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(21 920)	90	L8672c99
79	Au LXXVI	+75	Gold	Be	1s²2s²	¹S₀	2s ²S_1/2	(22 500)	100	L8672c99
79	Au LXXVII	+76	Gold	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(22 868.1)	0.3	L16264c99
79	Au LXXVIII	+77	Gold	He	1s²	¹S₀	1s ²S_1/2	(91 515.82)	0.17	L12128
79	Au LXXIX	+78	Gold	H	1s	²S_¹/₂		(93 254.3)	0.4	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Hg (all spectra) 80 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
80	Hg I	0	Mercury	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	10.437504	0.000006	L11931,L11984
80	Hg II	+1	Mercury	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	18.75687	0.00004	L11760
80	Hg III	+2	Mercury	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	34.46	0.07	L16379
80	Hg IV	+3	Mercury	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	48.55	0.15	L16379
80	Hg V	+4	Mercury	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	61.20	0.20	L289
80	Hg VI	+5	Mercury	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	76.6	0.5	L289
80	Hg VII	+6	Mercury	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	93.0	2.0	L289
80	Hg VIII	+7	Mercury	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(113.9)	2.1	L8672c99
80	Hg IX	+8	Mercury	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(134.0)	2.2	L8672c99
80	Hg X	+9	Mercury	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(153.0)	2.2	L8672c99
80	Hg XI	+10	Mercury	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(173.0)	2.4	L8672c99
80	Hg XII	+11	Mercury	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	[192.7]	1.7	L3654
80	Hg XIII	+12	Mercury	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	[276.9]	1.1	L3654
80	Hg XIV	+13	Mercury	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(307)	15	L582
80	Hg XV	+14	Mercury	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(332)	16	L582
80	Hg XVI	+15	Mercury	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(357)	17	L582
80	Hg XVII	+16	Mercury	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(402)	20	L582
80	Hg XVIII	+17	Mercury	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(429)	21	L582
80	Hg XIX	+18	Mercury	Sm	[Cd]4f¹⁴	¹S₀	4f¹³5s² ²F°_7/2	(477)	24	L582
80	Hg XX	+19	Mercury	Pm	[Cd]4f¹³	²F°_⁷/₂	4f¹³5s°	(530)	30	L582
80	Hg XXI	+20	Mercury	Nd	[Kr]4d¹⁰4f¹³5s	°	4f¹³ ²F°_7/2	(560)	30	L582
80	Hg XXII	+21	Mercury	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(590)	30	L582
80	Hg XXIII	+22	Mercury	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(650)	30	L582
80	Hg XXIV	+23	Mercury	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(710)	40	L582
80	Hg XXV	+24	Mercury	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(760)	40	L582
80	Hg XXVI	+25	Mercury	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(820)	40	L582
80	Hg XXVII	+26	Mercury	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(880)	40	L582
80	Hg XXVIII	+27	Mercury	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(930)	50	L582
80	Hg XXIX	+28	Mercury	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(990)	50	L582
80	Hg XXX	+29	Mercury	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(1 050)	50	L582
80	Hg XXXI	+30	Mercury	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(1 110)	60	L582
80	Hg XXXII	+31	Mercury	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(1 160)	60	L582
80	Hg XXXIII	+32	Mercury	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(1 220)	60	L582
80	Hg XXXIV	+33	Mercury	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(1 280)	60	L582
80	Hg XXXV	+34	Mercury	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(1 549)	5	L8672c99
80	Hg XXXVI	+35	Mercury	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(1 603)	5	L8672c99
80	Hg XXXVII	+36	Mercury	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(1 661)	5	L8672c99
80	Hg XXXVIII	+37	Mercury	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(1 723)	4	L8672c99
80	Hg XXXIX	+38	Mercury	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(1 780)	4	L8672c99
80	Hg XL	+39	Mercury	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(1 839)	4	L8672c99
80	Hg XLI	+40	Mercury	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(1 928)	4	L8672c99
80	Hg XLII	+41	Mercury	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(1 989)	4	L8672c99
80	Hg XLIII	+42	Mercury	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(2 052)	4	L8672c99
80	Hg XLIV	+43	Mercury	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(2 113)	4	L8672c99
80	Hg XLV	+44	Mercury	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(2 354)	4	L8672c99
80	Hg XLVI	+45	Mercury	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(2 412)	4	L8672c99
80	Hg XLVII	+46	Mercury	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(2 478)	4	L8672c99
80	Hg XLVIII	+47	Mercury	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(2 539)	4	L8672c99
80	Hg XLIX	+48	Mercury	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(2 745)	4	L8672c99
80	Hg L	+49	Mercury	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(2 815)	4	L8672c99
80	Hg LI	+50	Mercury	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(2 981)	4	L8672c99
80	Hg LII	+51	Mercury	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[3 049.9]	1.5	L10278
80	Hg LIII	+52	Mercury	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(5 055)	4	L8672c99
80	Hg LIV	+53	Mercury	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(5 191)	5	L8672c99
80	Hg LV	+54	Mercury	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(5 335)	5	L8672c99
80	Hg LVI	+55	Mercury	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(5 490)	5	L8672c99
80	Hg LVII	+56	Mercury	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(5 636)	5	L8672c99
80	Hg LVIII	+57	Mercury	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(5 780)	6	L8672c99
80	Hg LIX	+58	Mercury	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(6 041)	6	L8672c99
80	Hg LX	+59	Mercury	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(6 192)	7	L8672c99
80	Hg LXI	+60	Mercury	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(6 356)	10	L8672c99
80	Hg LXII	+61	Mercury	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(6 508)	12	L8672c99
80	Hg LXIII	+62	Mercury	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(6 933)	15	L8672c99
80	Hg LXIV	+63	Mercury	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(7 066)	19	L8672c99
80	Hg LXV	+64	Mercury	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(7 211)	24	L8672c99
80	Hg LXVI	+65	Mercury	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(7 350)	30	L8672c99
80	Hg LXVII	+66	Mercury	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(8 010)	40	L8672c99
80	Hg LXVIII	+67	Mercury	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(8 160)	40	L8672c99
80	Hg LXIX	+68	Mercury	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(8 470)	50	L8672c99
80	Hg LXX	+69	Mercury	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(8 620)	50	L8672c99
80	Hg LXXI	+70	Mercury	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(18 550)	60	L8672c99
80	Hg LXXII	+71	Mercury	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(18 910)	60	L8672c99
80	Hg LXXIII	+72	Mercury	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(19 310)	70	L8672c99
80	Hg LXXIV	+73	Mercury	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(19 680)	90	L8672c99
80	Hg LXXV	+74	Mercury	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(22 120)	90	L8672c99
80	Hg LXXVI	+75	Mercury	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(22 580)	100	L8672c99
80	Hg LXXVII	+76	Mercury	Be	1s²2s²	¹S₀	2s ²S_1/2	(23 170)	110	L8672c99
80	Hg LXXVIII	+77	Mercury	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(23 544.1)	0.3	L16264c99
80	Hg LXXIX	+78	Mercury	He	1s²	¹S₀	1s ²S_1/2	(94 124.70)	0.19	L12128
80	Hg LXXX	+79	Mercury	H	1s	²S_¹/₂		(95 897.7)	0.9	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Tl (all spectra) 81 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
81	Tl I	0	Thallium	Tl	[Hg]6p	²P°_¹/₂	6s² ¹S₀	6.1082873	0.0000012	L16353
81	Tl II	+1	Thallium	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	20.4283	0.0006	L3272
81	Tl III	+2	Thallium	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	29.8520	0.0006	L3138
81	Tl IV	+3	Thallium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	51.14	0.04	L1202
81	Tl V	+4	Thallium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	62.6	0.4	L9528
81	Tl VI	+5	Thallium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(80.0)	2.0	L8672c99
81	Tl VII	+6	Thallium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(97.9)	2.0	L8672c99
81	Tl VIII	+7	Thallium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(116.0)	2.1	L8672c99
81	Tl IX	+8	Thallium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(135.0)	2.2	L8672c99
81	Tl X	+9	Thallium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(158.0)	2.2	L8672c99
81	Tl XI	+10	Thallium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(177.0)	2.4	L8672c99
81	Tl XII	+11	Thallium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(198.0)	2.5	L8672c99
81	Tl XIII	+12	Thallium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	[218.3]	2.0	L3654
81	Tl XIV	+13	Thallium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	[306.9]	1.4	L3654
81	Tl XV	+14	Thallium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(340)	17	L582
81	Tl XVI	+15	Thallium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(366)	19	L582
81	Tl XVII	+16	Thallium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(392)	20	L582
81	Tl XVIII	+17	Thallium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(439)	22	L582
81	Tl XIX	+18	Thallium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(467)	24	L582
81	Tl XX	+19	Thallium	Sm	[Cd]4f¹⁴	¹S₀	4f¹³5s² ²F°_7/2	(520)	30	L582
81	Tl XXI	+20	Thallium	Pm	[Cd]4f¹³	²F°_⁷/₂	4f¹³5s°	(570)	30	L582
81	Tl XXII	+21	Thallium	Nd	[Kr]4d¹⁰4f¹³5s	°	4f¹³ ²F°_7/2	(600)	30	L582
81	Tl XXIII	+22	Thallium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(640)	30	L582
81	Tl XXIV	+23	Thallium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(700)	30	L582
81	Tl XXV	+24	Thallium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(760)	40	L582
81	Tl XXVI	+25	Thallium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(820)	40	L582
81	Tl XXVII	+26	Thallium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(880)	40	L582
81	Tl XXVIII	+27	Thallium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(930)	50	L582
81	Tl XXIX	+28	Thallium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(990)	50	L582
81	Tl XXX	+29	Thallium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(1 060)	50	L582
81	Tl XXXI	+30	Thallium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(1 110)	60	L582
81	Tl XXXII	+31	Thallium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(1 170)	60	L582
81	Tl XXXIII	+32	Thallium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(1 230)	60	L582
81	Tl XXXIV	+33	Thallium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(1 290)	60	L582
81	Tl XXXV	+34	Thallium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(1 350)	60	L582
81	Tl XXXVI	+35	Thallium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(1 625)	5	L8672c99
81	Tl XXXVII	+36	Thallium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(1 681)	5	L8672c99
81	Tl XXXVIII	+37	Thallium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(1 740)	4	L8672c99
81	Tl XXXIX	+38	Thallium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(1 802)	4	L8672c99
81	Tl XL	+39	Thallium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(1 862)	4	L8672c99
81	Tl XLI	+40	Thallium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(1 920)	4	L8672c99
81	Tl XLII	+41	Thallium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(2 014)	4	L8672c99
81	Tl XLIII	+42	Thallium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(2 075)	4	L8672c99
81	Tl XLIV	+43	Thallium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(2 140)	4	L8672c99
81	Tl XLV	+44	Thallium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(2 202)	4	L8672c99
81	Tl XLVI	+45	Thallium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(2 447)	4	L8672c99
81	Tl XLVII	+46	Thallium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(2 508)	4	L8672c99
81	Tl XLVIII	+47	Thallium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(2 574)	4	L8672c99
81	Tl XLIX	+48	Thallium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(2 635)	4	L8672c99
81	Tl L	+49	Thallium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(2 854)	4	L8672c99
81	Tl LI	+50	Thallium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(2 925)	4	L8672c99
81	Tl LII	+51	Thallium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(3 094)	4	L8672c99
81	Tl LIII	+52	Thallium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[3 164.7]	1.9	L10278
81	Tl LIV	+53	Thallium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(5 234)	5	L8672c99
81	Tl LV	+54	Thallium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(5 371)	5	L8672c99
81	Tl LVI	+55	Thallium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(5 518)	5	L8672c99
81	Tl LVII	+56	Thallium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(5 674)	5	L8672c99
81	Tl LVIII	+57	Thallium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(5 824)	6	L8672c99
81	Tl LIX	+58	Thallium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(5 969)	6	L8672c99
81	Tl LX	+59	Thallium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(6 241)	7	L8672c99
81	Tl LXI	+60	Thallium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(6 392)	10	L8672c99
81	Tl LXII	+61	Thallium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(6 560)	12	L8672c99
81	Tl LXIII	+62	Thallium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(6 714)	15	L8672c99
81	Tl LXIV	+63	Thallium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(7 146)	19	L8672c99
81	Tl LXV	+64	Thallium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(7 281)	24	L8672c99
81	Tl LXVI	+65	Thallium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(7 430)	30	L8672c99
81	Tl LXVII	+66	Thallium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(7 570)	40	L8672c99
81	Tl LXVIII	+67	Thallium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(8 260)	40	L8672c99
81	Tl LXIX	+68	Thallium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(8 420)	50	L8672c99
81	Tl LXX	+69	Thallium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(8 730)	50	L8672c99
81	Tl LXXI	+70	Thallium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(8 880)	60	L8672c99
81	Tl LXXII	+71	Thallium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(19 070)	60	L8672c99
81	Tl LXXIII	+72	Thallium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(19 440)	70	L8672c99
81	Tl LXXIV	+73	Thallium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(19 840)	90	L8672c99
81	Tl LXXV	+74	Thallium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(20 210)	90	L8672c99
81	Tl LXXVI	+75	Thallium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(22 780)	100	L8672c99
81	Tl LXXVII	+76	Thallium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(23 250)	110	L8672c99
81	Tl LXXVIII	+77	Thallium	Be	1s²2s²	¹S₀	2s ²S_1/2	(23 850)	120	L8672c99
81	Tl LXXIX	+78	Thallium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(24 234.1)	0.4	L16264c99
81	Tl LXXX	+79	Thallium	He	1s²	¹S₀	1s ²S_1/2	(96 783.21)	0.20	L12128
81	Tl LXXXI	+80	Thallium	H	1s	²S_¹/₂		(98 591.6)	0.4	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Pb (all spectra) 82 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
82	Pb I	0	Lead	Pb	[Hg]6p²	(¹/₂,¹/₂)₀	6p ²P°_1/2	7.4166799	0.0000006	L11569
82	Pb II	+1	Lead	Tl	[Hg]6p	²P°_¹/₂	6s² ¹S₀	15.032499	0.000007	L15205
82	Pb III	+2	Lead	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	5d¹⁰6s ²S_1/2	31.9373	0.0006	L3466
82	Pb IV	+3	Lead	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	42.33256	0.00010	L15205
82	Pb V	+4	Lead	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	[68.8]	0.5	L3577
82	Pb VI	+5	Lead	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(82.9)	2.0	L8672c99
82	Pb VII	+6	Lead	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(100.1)	2.0	L8672c99
82	Pb VIII	+7	Lead	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(120.0)	2.1	L8672c99
82	Pb IX	+8	Lead	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(138.0)	2.2	L8672c99
82	Pb X	+9	Lead	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(158.0)	2.2	L8672c99
82	Pb XI	+10	Lead	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(182.0)	2.4	L8672c99
82	Pb XII	+11	Lead	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(203.0)	2.5	L8672c99
82	Pb XIII	+12	Lead	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(224)	3	L8672c99
82	Pb XIV	+13	Lead	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	[245.1]	2.2	L3654
82	Pb XV	+14	Lead	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	[338.1]	1.5	L3654
82	Pb XVI	+15	Lead	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(374)	19	L582
82	Pb XVII	+16	Lead	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(401)	20	L582
82	Pb XVIII	+17	Lead	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(427)	21	L582
82	Pb XIX	+18	Lead	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(478)	24	L582
82	Pb XX	+19	Lead	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(507)	25	L582
82	Pb XXI	+20	Lead	Sm	[Cd]4f¹⁴	¹S₀	4f¹³5s² ²F°_7/2	(570)	30	L582
82	Pb XXII	+21	Lead	Pm	[Cd]4f¹³	²F°_⁷/₂	4f¹³5s°	(610)	30	L582
82	Pb XXIII	+22	Lead	Nd	[Kr]4d¹⁰4f¹³5s	°	4f¹³ ²F°_7/2	(650)	30	L582
82	Pb XXIV	+23	Lead	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(690)	30	L582
82	Pb XXV	+24	Lead	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(750)	40	L582
82	Pb XXVI	+25	Lead	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(810)	40	L582
82	Pb XXVII	+26	Lead	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(870)	40	L582
82	Pb XXVIII	+27	Lead	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(930)	50	L582
82	Pb XXIX	+28	Lead	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(990)	50	L582
82	Pb XXX	+29	Lead	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(1 050)	50	L582
82	Pb XXXI	+30	Lead	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(1 120)	60	L582
82	Pb XXXII	+31	Lead	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(1 180)	60	L582
82	Pb XXXIII	+32	Lead	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(1 240)	60	L582
82	Pb XXXIV	+33	Lead	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(1 300)	60	L582
82	Pb XXXV	+34	Lead	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(1 360)	60	L582
82	Pb XXXVI	+35	Lead	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(1 430)	70	L582
82	Pb XXXVII	+36	Lead	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(1 704)	5	L8672c99
82	Pb XXXVIII	+37	Lead	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(1 760)	4	L8672c99
82	Pb XXXIX	+38	Lead	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(1 819)	4	L8672c99
82	Pb XL	+39	Lead	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(1 884)	4	L8672c99
82	Pb XLI	+40	Lead	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(1 945)	4	L8672c99
82	Pb XLII	+41	Lead	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(2 004)	4	L8672c99
82	Pb XLIII	+42	Lead	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(2 101)	4	L8672c99
82	Pb XLIV	+43	Lead	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(2 163)	4	L8672c99
82	Pb XLV	+44	Lead	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(2 230)	4	L8672c99
82	Pb XLVI	+45	Lead	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(2 292)	4	L8672c99
82	Pb XLVII	+46	Lead	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(2 543)	4	L8672c99
82	Pb XLVIII	+47	Lead	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(2 605)	4	L8672c99
82	Pb XLIX	+48	Lead	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(2 671)	4	L8672c99
82	Pb L	+49	Lead	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(2 735)	4	L8672c99
82	Pb LI	+50	Lead	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(2 965)	4	L8672c99
82	Pb LII	+51	Lead	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(3 036)	4	L8672c99
82	Pb LIII	+52	Lead	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(3 211)	4	L8672c99
82	Pb LIV	+53	Lead	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[3 282.1]	2.0	L10278
82	Pb LV	+54	Lead	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(5 414)	5	L8672c99
82	Pb LVI	+55	Lead	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(5 555)	5	L8672c99
82	Pb LVII	+56	Lead	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(5 703)	5	L8672c99
82	Pb LVIII	+57	Lead	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(5 862)	6	L8672c99
82	Pb LIX	+58	Lead	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(6 015)	6	L8672c99
82	Pb LX	+59	Lead	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(6 162)	7	L8672c99
82	Pb LXI	+60	Lead	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(6 442)	10	L8672c99
82	Pb LXII	+61	Lead	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(6 597)	12	L8672c99
82	Pb LXIII	+62	Lead	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(6 767)	15	L8672c99
82	Pb LXIV	+63	Lead	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(6 924)	19	L8672c99
82	Pb LXV	+64	Lead	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(7 362)	24	L8672c99
82	Pb LXVI	+65	Lead	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(7 500)	30	L8672c99
82	Pb LXVII	+66	Lead	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(7 650)	40	L8672c99
82	Pb LXVIII	+67	Lead	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(7 790)	40	L8672c99
82	Pb LXIX	+68	Lead	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(8 520)	50	L8672c99
82	Pb LXX	+69	Lead	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(8 680)	50	L8672c99
82	Pb LXXI	+70	Lead	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(9 000)	60	L8672c99
82	Pb LXXII	+71	Lead	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(9 150)	60	L8672c99
82	Pb LXXIII	+72	Lead	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(19 590)	70	L8672c99
82	Pb LXXIV	+73	Lead	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(19 970)	90	L8672c99
82	Pb LXXV	+74	Lead	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(20 380)	90	L8672c99
82	Pb LXXVI	+75	Lead	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(20 750)	100	L8672c99
82	Pb LXXVII	+76	Lead	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(23 460)	110	L8672c99
82	Pb LXXVIII	+77	Lead	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(23 940)	120	L8672c99
82	Pb LXXIX	+78	Lead	Be	1s²2s²	¹S₀	2s ²S_1/2	(24 550)	120	L8672c99
82	Pb LXXX	+79	Lead	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(24 938.2)	0.4	L16264c99
82	Pb LXXXI	+80	Lead	He	1s²	¹S₀	1s ²S_1/2	(99 491.85)	0.21	L12128
82	Pb LXXXII	+81	Lead	H	1s	²S_¹/₂		(101 336.4)	0.4	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Bi (all spectra) 83 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty^b (eV)	References
83	Bi I	0	Bismuth	Bi	[Hg]6p³	⁴S°_³/₂	6p² ³P₀	7.285516	0.000006	L10664,L6247
83	Bi II	+1	Bismuth	Pb	[Hg]6p²	³P₀	6p ²P°_1/2	16.703	0.004	L6771
83	Bi III	+2	Bismuth	Tl	[Hg]6p	²P°_¹/₂	6s² ¹S₀	25.563		L3466,L3331
83	Bi IV	+3	Bismuth	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	45.37	0.06	L14078
83	Bi V	+4	Bismuth	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	54.856	0.025	L9361
83	Bi VI	+5	Bismuth	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	[88.4]	0.7	L3577
83	Bi VII	+6	Bismuth	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(103.0)	2.0	L8672c99
83	Bi VIII	+7	Bismuth	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(122.0)	2.1	L8672c99
83	Bi IX	+8	Bismuth	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(143.0)	2.2	L8672c99
83	Bi X	+9	Bismuth	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(161.1)	2.2	L8672c99
83	Bi XI	+10	Bismuth	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(183.0)	2.4	L8672c99
83	Bi XII	+11	Bismuth	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(208.0)	2.5	L8672c99
83	Bi XIII	+12	Bismuth	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(229)	3	L8672c99
83	Bi XIV	+13	Bismuth	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(252)	3	L8672c99
83	Bi XV	+14	Bismuth	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	[272.6]	2.5	L3654
83	Bi XVI	+15	Bismuth	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	[370.2]	1.6	L3654
83	Bi XVII	+16	Bismuth	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(409)	20	L582
83	Bi XVIII	+17	Bismuth	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(436)	22	L582
83	Bi XIX	+18	Bismuth	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(464)	23	L582
83	Bi XX	+19	Bismuth	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(520)	30	L582
83	Bi XXI	+20	Bismuth	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(550)	30	L582
83	Bi XXII	+21	Bismuth	Sm	[Cd]4f¹⁴	¹S₀	4f¹³5s² ²F°_7/2	(620)	30	L582
83	Bi XXIII	+22	Bismuth	Pm	[Cd]4f¹³	²F°_⁷/₂	4f¹³5s°	(660)	30	L582
83	Bi XXIV	+23	Bismuth	Nd	[Kr]4d¹⁰4f¹³5s	°	4f¹³ ²F°_7/2	(690)	30	L582
83	Bi XXV	+24	Bismuth	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(750)	40	L582
83	Bi XXVI	+25	Bismuth	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(810)	40	L582
83	Bi XXVII	+26	Bismuth	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(870)	50	L582
83	Bi XXVIII	+27	Bismuth	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(930)	50	L582
83	Bi XXIX	+28	Bismuth	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(990)	50	L582
83	Bi XXX	+29	Bismuth	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(1 060)	50	L582
83	Bi XXXI	+30	Bismuth	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(1 120)	60	L582
83	Bi XXXII	+31	Bismuth	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(1 180)	60	L582
83	Bi XXXIII	+32	Bismuth	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(1 250)	60	L582
83	Bi XXXIV	+33	Bismuth	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(1 310)	70	L582
83	Bi XXXV	+34	Bismuth	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(1 380)	70	L582
83	Bi XXXVI	+35	Bismuth	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(1 440)	70	L582
83	Bi XXXVII	+36	Bismuth	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(1 500)	70	L582
83	Bi XXXVIII	+37	Bismuth	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(1 784)	4	L8672c99
83	Bi XXXIX	+38	Bismuth	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(1 840)	4	L8672c99
83	Bi XL	+39	Bismuth	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(1 902)	4	L8672c99
83	Bi XLI	+40	Bismuth	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(1 967)	4	L8672c99
83	Bi XLII	+41	Bismuth	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(2 029)	4	L8672c99
83	Bi XLIII	+42	Bismuth	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(2 090)	4	L8672c99
83	Bi XLIV	+43	Bismuth	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(2 190)	4	L8672c99
83	Bi XLV	+44	Bismuth	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(2 253)	4	L8672c99
83	Bi XLVI	+45	Bismuth	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(2 321)	4	L8672c99
83	Bi XLVII	+46	Bismuth	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(2 385)	4	L8672c99
83	Bi XLVIII	+47	Bismuth	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(2 641)	4	L8672c99
83	Bi XLIX	+48	Bismuth	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(2 703)	4	L8672c99
83	Bi L	+49	Bismuth	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(2 771)	4	L8672c99
83	Bi LI	+50	Bismuth	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(2 835)	4	L8672c99
83	Bi LII	+51	Bismuth	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(3 078)	4	L8672c99
83	Bi LIII	+52	Bismuth	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(3 151)	4	L8672c99
83	Bi LIV	+53	Bismuth	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(3 329)	5	L8672c99
83	Bi LV	+54	Bismuth	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[3 401.8]	2.4	L10278
83	Bi LVI	+55	Bismuth	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(5 599)	5	L8672c99
83	Bi LVII	+56	Bismuth	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(5 740)	5	L8672c99
83	Bi LVIII	+57	Bismuth	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(5 892)	6	L8672c99
83	Bi LIX	+58	Bismuth	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(6 054)	6	L8672c99
83	Bi LX	+59	Bismuth	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(6 208)	7	L8672c99
83	Bi LXI	+60	Bismuth	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(6 358)	10	L8672c99
83	Bi LXII	+61	Bismuth	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(6 648)	12	L8672c99
83	Bi LXIII	+62	Bismuth	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(6 804)	15	L8672c99
83	Bi LXIV	+63	Bismuth	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(6 977)	19	L8672c99
83	Bi LXV	+64	Bismuth	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(7 137)	24	L8672c99
83	Bi LXVI	+65	Bismuth	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(7 580)	30	L8672c99
83	Bi LXVII	+66	Bismuth	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(7 720)	40	L8672c99
83	Bi LXVIII	+67	Bismuth	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(7 870)	40	L8672c99
83	Bi LXIX	+68	Bismuth	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(8 010)	50	L8672c99
83	Bi LXX	+69	Bismuth	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(8 780)	50	L8672c99
83	Bi LXXI	+70	Bismuth	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(8 950)	60	L8672c99
83	Bi LXXII	+71	Bismuth	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(9 270)	60	L8672c99
83	Bi LXXIII	+72	Bismuth	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(9 430)	70	L8672c99
83	Bi LXXIV	+73	Bismuth	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(20 130)	90	L8672c99
83	Bi LXXV	+74	Bismuth	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(20 500)	90	L8672c99
83	Bi LXXVI	+75	Bismuth	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(20 920)	100	L8672c99
83	Bi LXXVII	+76	Bismuth	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(21 300)	110	L8672c99
83	Bi LXXVIII	+77	Bismuth	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(24 150)	120	L8672c99
83	Bi LXXIX	+78	Bismuth	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(24 640)	120	L8672c99
83	Bi LXXX	+79	Bismuth	Be	1s²2s²	¹S₀	2s ²S_1/2	(25 260)	140	L8672c99
83	Bi LXXXI	+80	Bismuth	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(25 656.9)	0.4	L16264c99
83	Bi LXXXII	+81	Bismuth	He	1s²	¹S₀	1s ²S_1/2	(102 251.76)	0.24	L12128
83	Bi LXXXIII	+82	Bismuth	H	1s	²S_¹/₂		(104 132.8)	0.5	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Po (all spectra) 84 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
84	Po I	0	Polonium	Po	[Hg]6p⁴	³P₂	6p³ ⁴S°_3/2	8.414	0.004	L8844,L3488
84	Po II	+1	Polonium	Bi	[Hg]6p³	⁴S°_³/₂	6p² ³P₀	[19.3]	1.7	L16139
84	Po III	+2	Polonium	Pb	[Hg]6p²	³P₀	6p ²P°_1/2	[27.3]	0.7	L16139
84	Po IV	+3	Polonium	Tl	[Hg]6p	²P°_¹/₂	6s² ¹S₀	(36.0)	1.7	L8672c99
84	Po V	+4	Polonium	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	(57.0)	1.9	L8672c99
84	Po VI	+5	Polonium	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	(69.1)	2.0	L8672c99
84	Po VII	+6	Polonium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(108.0)	2.0	L8672c99
84	Po VIII	+7	Polonium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(125.0)	2.1	L8672c99
84	Po IX	+8	Polonium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(146.1)	2.2	L8672c99
84	Po X	+9	Polonium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(166.0)	2.2	L8672c99
84	Po XI	+10	Polonium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(186.0)	2.4	L8672c99
84	Po XII	+11	Polonium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(209.0)	2.5	L8672c99
84	Po XIII	+12	Polonium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(235)	3	L8672c99
84	Po XIV	+13	Polonium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(257)	3	L8672c99
84	Po XV	+14	Polonium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(281)	3	L8672c99
84	Po XVI	+15	Polonium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(304)	3	L8672c99
84	Po XVII	+16	Polonium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	(416)	21	L582
84	Po XVIII	+17	Polonium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(444)	22	L582
84	Po XIX	+18	Polonium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(473)	24	L582
84	Po XX	+19	Polonium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(502)	25	L582
84	Po XXI	+20	Polonium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(560)	30	L582
84	Po XXII	+21	Polonium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(590)	30	L582
84	Po XXIII	+22	Polonium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2	(670)	30	L582
84	Po XXIV	+23	Polonium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀	(700)	30	L582
84	Po XXV	+24	Polonium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2	(740)	40	L582
84	Po XXVI	+25	Polonium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(800)	40	L582
84	Po XXVII	+26	Polonium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(870)	40	L582
84	Po XXVIII	+27	Polonium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(930)	50	L582
84	Po XXIX	+28	Polonium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(990)	50	L582
84	Po XXX	+29	Polonium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(1 060)	50	L582
84	Po XXXI	+30	Polonium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(1 120)	60	L582
84	Po XXXII	+31	Polonium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(1 180)	60	L582
84	Po XXXIII	+32	Polonium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(1 250)	60	L582
84	Po XXXIV	+33	Polonium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(1 320)	70	L582
84	Po XXXV	+34	Polonium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(1 380)	70	L582
84	Po XXXVI	+35	Polonium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(1 440)	70	L582
84	Po XXXVII	+36	Polonium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(1 510)	70	L582
84	Po XXXVIII	+37	Polonium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(1 570)	70	L582
84	Po XXXIX	+38	Polonium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(1 865)	4	L8672c99
84	Po XL	+39	Polonium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(1 923)	4	L8672c99
84	Po XLI	+40	Polonium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(1 986)	4	L8672c99
84	Po XLII	+41	Polonium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(2 052)	4	L8672c99
84	Po XLIII	+42	Polonium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(2 115)	4	L8672c99
84	Po XLIV	+43	Polonium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(2 177)	4	L8672c99
84	Po XLV	+44	Polonium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(2 281)	4	L8672c99
84	Po XLVI	+45	Polonium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(2 345)	4	L8672c99
84	Po XLVII	+46	Polonium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(2 414)	4	L8672c99
84	Po XLVIII	+47	Polonium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(2 480)	4	L8672c99
84	Po XLIX	+48	Polonium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(2 740)	4	L8672c99
84	Po L	+49	Polonium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(2 803)	4	L8672c99
84	Po LI	+50	Polonium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(2 873)	4	L8672c99
84	Po LII	+51	Polonium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(2 938)	4	L8672c99
84	Po LIII	+52	Polonium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(3 194)	4	L8672c99
84	Po LIV	+53	Polonium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(3 268)	5	L8672c99
84	Po LV	+54	Polonium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(3 450)	5	L8672c99
84	Po LVI	+55	Polonium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[3 524.2]	2.5	L10278
84	Po LVII	+56	Polonium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(5 785)	5	L8672c99
84	Po LVIII	+57	Polonium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(5 930)	6	L8672c99
84	Po LIX	+58	Polonium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(6 084)	6	L8672c99
84	Po LX	+59	Polonium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(6 248)	7	L8672c99
84	Po LXI	+60	Polonium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(6 405)	10	L8672c99
84	Po LXII	+61	Polonium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(6 557)	12	L8672c99
84	Po LXIII	+62	Polonium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(6 856)	15	L8672c99
84	Po LXIV	+63	Polonium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(7 015)	19	L8672c99
84	Po LXV	+64	Polonium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(7 191)	24	L8672c99
84	Po LXVI	+65	Polonium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(7 350)	30	L8672c99
84	Po LXVII	+66	Polonium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(7 810)	40	L8672c99
84	Po LXVIII	+67	Polonium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(7 950)	40	L8672c99
84	Po LXIX	+68	Polonium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(8 100)	50	L8672c99
84	Po LXX	+69	Polonium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(8 240)	50	L8672c99
84	Po LXXI	+70	Polonium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(9 050)	60	L8672c99
84	Po LXXII	+71	Polonium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(9 220)	60	L8672c99
84	Po LXXIII	+72	Polonium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(9 550)	70	L8672c99
84	Po LXXIV	+73	Polonium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(9 710)	90	L8672c99
84	Po LXXV	+74	Polonium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(20 670)	90	L8672c99
84	Po LXXVI	+75	Polonium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(21 050)	100	L8672c99
84	Po LXXVII	+76	Polonium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(21 470)	110	L8672c99
84	Po LXXVIII	+77	Polonium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(21 860)	120	L8672c99
84	Po LXXIX	+78	Polonium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(24 860)	120	L8672c99
84	Po LXXX	+79	Polonium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(25 360)	140	L8672c99
84	Po LXXXI	+80	Polonium	Be	1s²2s²	¹S₀	2s ²S_1/2	(25 990)	150	L8672c99
84	Po LXXXII	+81	Polonium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(26 390.4)	0.4	L16264c99
84	Po LXXXIII	+82	Polonium	He	1s²	¹S₀	1s ²S_1/2	(105 064.3)	0.4	L12128
84	Po LXXXIV	+83	Polonium	H	1s	²S_¹/₂		(106 982.7)	1.2	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data At (all spectra) 85 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty^b (eV)	References
85	At I	0	Astatine	At	[Hg]6p⁵	²P°_³/₂	6p⁴ ³P₂	9.31751	0.00008	L18394
85	At II	+1	Astatine	Po	[Hg]6p⁴	³P₂	6p³ ⁴S°_3/2	[17.880]	0.020	L15918
85	At III	+2	Astatine	Bi	[Hg]6p³	⁴S°_³/₂	6p² ³P₀	[26.58]	0.05	L15918
85	At IV	+3	Astatine	Pb	[Hg]6p²	³P₀	6p ²P°_1/2	[39.65]		L15918
85	At V	+4	Astatine	Tl	[Hg]6p	²P°_¹/₂	6s² ¹S₀	[50.39]		L15918
85	At VI	+5	Astatine	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	(72.0)	2.0	L8672c99
85	At VII	+6	Astatine	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	(85.1)	2.0	L8672c99
85	At VIII	+7	Astatine	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(130.1)	2.1	L8672c99
85	At IX	+8	Astatine	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(149.0)	2.2	L8672c99
85	At X	+9	Astatine	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(169.0)	2.2	L8672c99
85	At XI	+10	Astatine	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(192.1)	2.4	L8672c99
85	At XII	+11	Astatine	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(212.0)	2.5	L8672c99
85	At XIII	+12	Astatine	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(236)	3	L8672c99
85	At XIV	+13	Astatine	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(263)	3	L8672c99
85	At XV	+14	Astatine	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(287)	3	L8672c99
85	At XVI	+15	Astatine	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(311)	3	L8672c99
85	At XVII	+16	Astatine	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(335)	3	L8672c99
85	At XVIII	+17	Astatine	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	(452)	22	L582
85	At XIX	+18	Astatine	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(481)	24	L582
85	At XX	+19	Astatine	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(510)	30	L582
85	At XXI	+20	Astatine	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(540)	30	L582
85	At XXII	+21	Astatine	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(600)	30	L582
85	At XXIII	+22	Astatine	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(630)	30	L582
85	At XXIV	+23	Astatine	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2	(720)	40	L582
85	At XXV	+24	Astatine	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀	(750)	40	L582
85	At XXVI	+25	Astatine	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2	(790)	40	L582
85	At XXVII	+26	Astatine	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(860)	40	L582
85	At XXVIII	+27	Astatine	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(920)	50	L582
85	At XXIX	+28	Astatine	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(990)	50	L582
85	At XXX	+29	Astatine	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(1 050)	50	L582
85	At XXXI	+30	Astatine	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(1 120)	60	L582
85	At XXXII	+31	Astatine	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(1 180)	60	L582
85	At XXXIII	+32	Astatine	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(1 250)	60	L582
85	At XXXIV	+33	Astatine	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(1 320)	70	L582
85	At XXXV	+34	Astatine	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(1 380)	70	L582
85	At XXXVI	+35	Astatine	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(1 450)	70	L582
85	At XXXVII	+36	Astatine	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(1 510)	70	L582
85	At XXXVIII	+37	Astatine	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(1 590)	70	L582
85	At XXXIX	+38	Astatine	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(1 650)	90	L582
85	At XL	+39	Astatine	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(1 948)	4	L8672c99
85	At XLI	+40	Astatine	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(2 007)	4	L8672c99
85	At XLII	+41	Astatine	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(2 071)	4	L8672c99
85	At XLIII	+42	Astatine	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(2 139)	4	L8672c99
85	At XLIV	+43	Astatine	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(2 203)	4	L8672c99
85	At XLV	+44	Astatine	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(2 266)	4	L8672c99
85	At XLVI	+45	Astatine	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(2 373)	4	L8672c99
85	At XLVII	+46	Astatine	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(2 439)	4	L8672c99
85	At XLVIII	+47	Astatine	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(2 510)	4	L8672c99
85	At XLIX	+48	Astatine	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(2 576)	4	L8672c99
85	At L	+49	Astatine	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(2 841)	4	L8672c99
85	At LI	+50	Astatine	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(2 905)	4	L8672c99
85	At LII	+51	Astatine	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(2 977)	4	L8672c99
85	At LIII	+52	Astatine	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(3 042)	4	L8672c99
85	At LIV	+53	Astatine	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(3 312)	5	L8672c99
85	At LV	+54	Astatine	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(3 388)	5	L8672c99
85	At LVI	+55	Astatine	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(3 573)	5	L8672c99
85	At LVII	+56	Astatine	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[3 649]	3	L10278
85	At LVIII	+57	Astatine	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(5 976)	6	L8672c99
85	At LIX	+58	Astatine	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(6 122)	6	L8672c99
85	At LX	+59	Astatine	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(6 279)	7	L8672c99
85	At LXI	+60	Astatine	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(6 445)	10	L8672c99
85	At LXII	+61	Astatine	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(6 604)	12	L8672c99
85	At LXIII	+62	Astatine	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(6 759)	15	L8672c99
85	At LXIV	+63	Astatine	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(7 068)	19	L8672c99
85	At LXV	+64	Astatine	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(7 230)	24	L8672c99
85	At LXVI	+65	Astatine	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(7 410)	30	L8672c99
85	At LXVII	+66	Astatine	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(7 570)	40	L8672c99
85	At LXVIII	+67	Astatine	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(8 030)	40	L8672c99
85	At LXIX	+68	Astatine	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(8 180)	50	L8672c99
85	At LXX	+69	Astatine	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(8 330)	50	L8672c99
85	At LXXI	+70	Astatine	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(8 480)	60	L8672c99
85	At LXXII	+71	Astatine	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(9 330)	60	L8672c99
85	At LXXIII	+72	Astatine	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(9 500)	70	L8672c99
85	At LXXIV	+73	Astatine	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(9 830)	90	L8672c99
85	At LXXV	+74	Astatine	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(9 990)	90	L8672c99
85	At LXXVI	+75	Astatine	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(21 210)	100	L8672c99
85	At LXXVII	+76	Astatine	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(21 600)	110	L8672c99
85	At LXXVIII	+77	Astatine	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(22 030)	120	L8672c99
85	At LXXIX	+78	Astatine	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(22 420)	120	L8672c99
85	At LXXX	+79	Astatine	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(25 580)	140	L8672c99
85	At LXXXI	+80	Astatine	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(26 090)	150	L8672c99
85	At LXXXII	+81	Astatine	Be	1s²2s²	¹S₀	2s ²S_1/2	(26 730)	160	L8672c99
85	At LXXXIII	+82	Astatine	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(27 139.0)	0.4	L16264c99
85	At LXXXIV	+83	Astatine	He	1s²	¹S₀	1s ²S_1/2	(107 923.4)	0.7	L10054
85	At LXXXV	+84	Astatine	H	1s	²S_¹/₂		(109 886.0)	1.4	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Rn (all spectra) 86 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty^b (eV)	References
86	Rn I	0	Radon	Rn	[Hg]6p⁶	¹S₀	6p⁵ ²P°_3/2	10.74850		L272,L7432
86	Rn II	+1	Radon	At	[Hg]6p⁵	²P°_³/₂	6p⁴ ³P₂	[21.4]	1.9	L16139
86	Rn III	+2	Radon	Po	[Hg]6p⁴	³P₂	6p³ ⁴S°_3/2	[29.4]	1.0	L16139
86	Rn IV	+3	Radon	Bi	[Hg]6p³	⁴S°_³/₂	6p² ³P₀	(36.9)	1.7	L8672c99
86	Rn V	+4	Radon	Pb	[Hg]6p²	³P₀	6p ²P°_1/2	(52.9)	1.9	L8672c99
86	Rn VI	+5	Radon	Tl	[Hg]6p	²P°_¹/₂	6s² ¹S₀	(64.0)	2.0	L8672c99
86	Rn VII	+6	Radon	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	(88.0)	2.0	L8672c99
86	Rn VIII	+7	Radon	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	(102.0)	2.1	L8672c99
86	Rn IX	+8	Radon	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(154.0)	2.2	L8672c99
86	Rn X	+9	Radon	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(173.9)	2.2	L8672c99
86	Rn XI	+10	Radon	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(195.0)	2.4	L8672c99
86	Rn XII	+11	Radon	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(218.0)	2.5	L8672c99
86	Rn XIII	+12	Radon	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(240)	3	L8672c99
86	Rn XIV	+13	Radon	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(264)	3	L8672c99
86	Rn XV	+14	Radon	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(293)	3	L8672c99
86	Rn XVI	+15	Radon	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(317)	3	L8672c99
86	Rn XVII	+16	Radon	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(342)	3	L8672c99
86	Rn XVIII	+17	Radon	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(367)	3	L8672c99
86	Rn XIX	+18	Radon	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	(488)	25	L582
86	Rn XX	+19	Radon	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(520)	30	L582
86	Rn XXI	+20	Radon	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(550)	30	L582
86	Rn XXII	+21	Radon	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(580)	30	L582
86	Rn XXIII	+22	Radon	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(640)	30	L582
86	Rn XXIV	+23	Radon	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(680)	30	L582
86	Rn XXV	+24	Radon	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2	(760)	40	L582
86	Rn XXVI	+25	Radon	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀	(800)	40	L582
86	Rn XXVII	+26	Radon	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2	(850)	40	L582
86	Rn XXVIII	+27	Radon	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(920)	50	L582
86	Rn XXIX	+28	Radon	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(980)	50	L582
86	Rn XXX	+29	Radon	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(1 050)	50	L582
86	Rn XXXI	+30	Radon	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(1 110)	60	L582
86	Rn XXXII	+31	Radon	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(1 180)	60	L582
86	Rn XXXIII	+32	Radon	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(1 250)	60	L582
86	Rn XXXIV	+33	Radon	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(1 310)	70	L582
86	Rn XXXV	+34	Radon	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(1 390)	70	L582
86	Rn XXXVI	+35	Radon	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(1 460)	70	L582
86	Rn XXXVII	+36	Radon	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(1 520)	80	L582
86	Rn XXXVIII	+37	Radon	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(1 590)	70	L582
86	Rn XXXIX	+38	Radon	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(1 660)	90	L582
86	Rn XL	+39	Radon	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(1 720)	90	L582
86	Rn XLI	+40	Radon	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(2 033)	4	L8672c99
86	Rn XLII	+41	Radon	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(2 094)	4	L8672c99
86	Rn XLIII	+42	Radon	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(2 158)	4	L8672c99
86	Rn XLIV	+43	Radon	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(2 227)	4	L8672c99
86	Rn XLV	+44	Radon	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(2 293)	4	L8672c99
86	Rn XLVI	+45	Radon	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(2 357)	4	L8672c99
86	Rn XLVII	+46	Radon	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(2 467)	4	L8672c99
86	Rn XLVIII	+47	Radon	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(2 535)	4	L8672c99
86	Rn XLIX	+48	Radon	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(2 606)	4	L8672c99
86	Rn L	+49	Radon	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(2 674)	4	L8672c99
86	Rn LI	+50	Radon	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(2 944)	4	L8672c99
86	Rn LII	+51	Radon	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(3 010)	4	L8672c99
86	Rn LIII	+52	Radon	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(3 082)	4	L8672c99
86	Rn LIV	+53	Radon	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(3 149)	5	L8672c99
86	Rn LV	+54	Radon	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(3 433)	5	L8672c99
86	Rn LVI	+55	Radon	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(3 510)	5	L8672c99
86	Rn LVII	+56	Radon	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(3 699)	5	L8672c99
86	Rn LVIII	+57	Radon	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[3 777]	3	L10278
86	Rn LIX	+58	Radon	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(6 169)	6	L8672c99
86	Rn LX	+59	Radon	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(6 318)	7	L8672c99
86	Rn LXI	+60	Radon	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(6 476)	10	L8672c99
86	Rn LXII	+61	Radon	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(6 646)	12	L8672c99
86	Rn LXIII	+62	Radon	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(6 807)	15	L8672c99
86	Rn LXIV	+63	Radon	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(6 964)	19	L8672c99
86	Rn LXV	+64	Radon	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(7 283)	24	L8672c99
86	Rn LXVI	+65	Radon	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(7 450)	30	L8672c99
86	Rn LXVII	+66	Radon	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(7 630)	40	L8672c99
86	Rn LXVIII	+67	Radon	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(7 800)	40	L8672c99
86	Rn LXIX	+68	Radon	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(8 260)	50	L8672c99
86	Rn LXX	+69	Radon	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(8 410)	50	L8672c99
86	Rn LXXI	+70	Radon	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(8 570)	60	L8672c99
86	Rn LXXII	+71	Radon	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(8 710)	60	L8672c99
86	Rn LXXIII	+72	Radon	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(9 610)	70	L8672c99
86	Rn LXXIV	+73	Radon	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(9 780)	90	L8672c99
86	Rn LXXV	+74	Radon	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(10 120)	90	L8672c99
86	Rn LXXVI	+75	Radon	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(10 290)	100	L8672c99
86	Rn LXXVII	+76	Radon	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(21 770)	110	L8672c99
86	Rn LXXVIII	+77	Radon	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(22 160)	120	L8672c99
86	Rn LXXIX	+78	Radon	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(22 600)	120	L8672c99
86	Rn LXXX	+79	Radon	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(22 990)	140	L8672c99
86	Rn LXXXI	+80	Radon	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(26 310)	150	L8672c99
86	Rn LXXXII	+81	Radon	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(26 830)	160	L8672c99
86	Rn LXXXIII	+82	Radon	Be	1s²2s²	¹S₀	2s ²S_1/2	(27 490)	170	L8672c99
86	Rn LXXXIV	+83	Radon	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(27 903.1)	0.5	L16264c99
86	Rn LXXXV	+84	Radon	He	1s²	¹S₀	1s ²S_1/2	(110 842.0)	0.5	L12128
86	Rn LXXXVI	+85	Radon	H	1s	²S_¹/₂		(112 843.7)	1.6	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Fr (all spectra) 87 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
87	Fr I	0	Francium	Fr	[Rn]7s	²S_¹/₂	6p⁶ ¹S₀	4.0727410	0.0000011	L10714
87	Fr II	+1	Francium	Rn	[Hg]6p⁶	¹S₀	6p⁵ ²P°_3/2	[22.4]	1.9	L16139
87	Fr III	+2	Francium	At	[Hg]6p⁵	²P°_³/₂	6p⁴ ³P₂	[33.5]	1.5	L16139
87	Fr IV	+3	Francium	Po	[Hg]6p⁴	³P₂	6p³ ⁴S°_3/2	(39.1)	1.7	L8672c99
87	Fr V	+4	Francium	Bi	[Hg]6p³	⁴S°_³/₂	6p² ³P₀	(50.0)	1.9	L8672c99
87	Fr VI	+5	Francium	Pb	[Hg]6p²	³P₀	6p ²P°_1/2	(67.0)	2.0	L8672c99
87	Fr VII	+6	Francium	Tl	[Hg]6p	²P°_¹/₂	6s² ¹S₀	(80.0)	2.0	L8672c99
87	Fr VIII	+7	Francium	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	(106.0)	2.1	L8672c99
87	Fr IX	+8	Francium	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	(120.0)	2.2	L8672c99
87	Fr X	+9	Francium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(179.0)	2.2	L8672c99
87	Fr XI	+10	Francium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(200.0)	2.4	L8672c99
87	Fr XII	+11	Francium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(222.1)	2.5	L8672c99
87	Fr XIII	+12	Francium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(245)	3	L8672c99
87	Fr XIV	+13	Francium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(269)	3	L8672c99
87	Fr XV	+14	Francium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(293)	3	L8672c99
87	Fr XVI	+15	Francium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(324)	3	L8672c99
87	Fr XVII	+16	Francium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(349)	3	L8672c99
87	Fr XVIII	+17	Francium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(375)	3	L8672c99
87	Fr XIX	+18	Francium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(400)	3	L8672c99
87	Fr XX	+19	Francium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	(530)	30	L582
87	Fr XXI	+20	Francium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(560)	30	L582
87	Fr XXII	+21	Francium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(590)	30	L582
87	Fr XXIII	+22	Francium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(620)	30	L582
87	Fr XXIV	+23	Francium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(690)	30	L582
87	Fr XXV	+24	Francium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(720)	40	L582
87	Fr XXVI	+25	Francium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2	(810)	40	L582
87	Fr XXVII	+26	Francium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀	(850)	40	L582
87	Fr XXVIII	+27	Francium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2	(910)	50	L582
87	Fr XXIX	+28	Francium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(980)	50	L582
87	Fr XXX	+29	Francium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(1 040)	50	L582
87	Fr XXXI	+30	Francium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(1 110)	50	L582
87	Fr XXXII	+31	Francium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(1 180)	60	L582
87	Fr XXXIII	+32	Francium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(1 250)	60	L582
87	Fr XXXIV	+33	Francium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(1 320)	70	L582
87	Fr XXXV	+34	Francium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(1 380)	70	L582
87	Fr XXXVI	+35	Francium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(1 460)	70	L582
87	Fr XXXVII	+36	Francium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(1 530)	80	L582
87	Fr XXXVIII	+37	Francium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(1 600)	80	L582
87	Fr XXXIX	+38	Francium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(1 670)	90	L582
87	Fr XL	+39	Francium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(1 740)	90	L582
87	Fr XLI	+40	Francium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(1 810)	90	L582
87	Fr XLII	+41	Francium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(2 119)	4	L8672c99
87	Fr XLIII	+42	Francium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(2 182)	4	L8672c99
87	Fr XLIV	+43	Francium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(2 247)	4	L8672c99
87	Fr XLV	+44	Francium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(2 317)	4	L8672c99
87	Fr XLVI	+45	Francium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(2 384)	4	L8672c99
87	Fr XLVII	+46	Francium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(2 450)	4	L8672c99
87	Fr XLVIII	+47	Francium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(2 564)	4	L8672c99
87	Fr XLIX	+48	Francium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(2 631)	4	L8672c99
87	Fr L	+49	Francium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(2 706)	4	L8672c99
87	Fr LI	+50	Francium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(2 774)	4	L8672c99
87	Fr LII	+51	Francium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(3 049)	4	L8672c99
87	Fr LIII	+52	Francium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(3 115)	4	L8672c99
87	Fr LIV	+53	Francium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(3 190)	5	L8672c99
87	Fr LV	+54	Francium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(3 257)	5	L8672c99
87	Fr LVI	+55	Francium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(3 556)	5	L8672c99
87	Fr LVII	+56	Francium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(3 635)	5	L8672c99
87	Fr LVIII	+57	Francium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(3 828)	6	L8672c99
87	Fr LIX	+58	Francium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[3 907]	4	L10278
87	Fr LX	+59	Francium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(6 365)	7	L8672c99
87	Fr LXI	+60	Francium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(6 516)	10	L8672c99
87	Fr LXII	+61	Francium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(6 678)	12	L8672c99
87	Fr LXIII	+62	Francium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(6 849)	15	L8672c99
87	Fr LXIV	+63	Francium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(7 013)	19	L8672c99
87	Fr LXV	+64	Francium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(7 172)	24	L8672c99
87	Fr LXVI	+65	Francium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(7 500)	30	L8672c99
87	Fr LXVII	+66	Francium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(7 670)	40	L8672c99
87	Fr LXVIII	+67	Francium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(7 850)	40	L8672c99
87	Fr LXIX	+68	Francium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(8 020)	50	L8672c99
87	Fr LXX	+69	Francium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(8 500)	50	L8672c99
87	Fr LXXI	+70	Francium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(8 640)	60	L8672c99
87	Fr LXXII	+71	Francium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(8 800)	60	L8672c99
87	Fr LXXIII	+72	Francium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(8 950)	70	L8672c99
87	Fr LXXIV	+73	Francium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(9 890)	90	L8672c99
87	Fr LXXV	+74	Francium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(10 070)	90	L8672c99
87	Fr LXXVI	+75	Francium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(10 420)	100	L8672c99
87	Fr LXXVII	+76	Francium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(10 590)	110	L8672c99
87	Fr LXXVIII	+77	Francium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(22 330)	120	L8672c99
87	Fr LXXIX	+78	Francium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(22 730)	120	L8672c99
87	Fr LXXX	+79	Francium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(23 170)	140	L8672c99
87	Fr LXXXI	+80	Francium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(23 570)	150	L8672c99
87	Fr LXXXII	+81	Francium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(27 060)	160	L8672c99
87	Fr LXXXIII	+82	Francium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(27 590)	170	L8672c99
87	Fr LXXXIV	+83	Francium	Be	1s²2s²	¹S₀	2s ²S_1/2	(28 260)	190	L8672c99
87	Fr LXXXV	+84	Francium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(28 683.4)	0.5	L16264c99
87	Fr LXXXVI	+85	Francium	He	1s²	¹S₀	1s ²S_1/2	(113 817.2)	0.5	L12128
87	Fr LXXXVII	+86	Francium	H	1s	²S_¹/₂		(115 859.0)	1.7	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶
[Kr] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶
[Cd] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²
[Xe] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶
[Hg] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶4f¹⁴5d¹⁰6s²
[Rn] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶4f¹⁴5d¹⁰6s²6p⁶

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Ra (all spectra) 88 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
88	Ra I	0	Radium	Ra	[Rn]7s²	¹S₀	6p⁶7s ²S_1/2	5.2784239	0.0000025	L4979
88	Ra II	+1	Radium	Fr	[Rn]7s	²S_¹/₂	6p⁶ ¹S₀	10.14718	0.00006	L19486
88	Ra III	+2	Radium	Rn	[Hg]6p⁶	¹S₀	6p⁵ ²P°_3/2	(31.0)	1.6	L8672c99
88	Ra IV	+3	Radium	At	[Hg]6p⁵	²P°_³/₂	6p⁴ ³P₂	(41.0)	1.7	L8672c99
88	Ra V	+4	Radium	Po	[Hg]6p⁴	³P₂	6p³ ⁴S°_3/2	(52.9)	1.9	L8672c99
88	Ra VI	+5	Radium	Bi	[Hg]6p³	⁴S°_³/₂	6p² ³P₀	(64.0)	2.0	L8672c99
88	Ra VII	+6	Radium	Pb	[Hg]6p²	³P₀	6p ²P°_1/2	(82.0)	2.0	L8672c99
88	Ra VIII	+7	Radium	Tl	[Hg]6p	²P°_¹/₂	6s² ¹S₀	(97.0)	2.1	L8672c99
88	Ra IX	+8	Radium	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	(124.0)	2.2	L8672c99
88	Ra X	+9	Radium	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	(140.0)	2.2	L8672c99
88	Ra XI	+10	Radium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(204.9)	2.4	L8672c99
88	Ra XII	+11	Radium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(227.0)	2.5	L8672c99
88	Ra XIII	+12	Radium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(250)	3	L8672c99
88	Ra XIV	+13	Radium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(274)	3	L8672c99
88	Ra XV	+14	Radium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(299)	3	L8672c99
88	Ra XVI	+15	Radium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(324)	3	L8672c99
88	Ra XVII	+16	Radium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(356)	3	L8672c99
88	Ra XVIII	+17	Radium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(382)	3	L8672c99
88	Ra XIX	+18	Radium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(409)	3	L8672c99
88	Ra XX	+19	Radium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(435)	4	L8672c99
88	Ra XXI	+20	Radium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	(570)	30	L582
88	Ra XXII	+21	Radium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(600)	30	L582
88	Ra XXIII	+22	Radium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(630)	30	L582
88	Ra XXIV	+23	Radium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(660)	30	L582
88	Ra XXV	+24	Radium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(740)	40	L582
88	Ra XXVI	+25	Radium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(770)	40	L582
88	Ra XXVII	+26	Radium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2	(860)	40	L582
88	Ra XXVIII	+27	Radium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀	(900)	40	L582
88	Ra XXIX	+28	Radium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2	(970)	50	L582
88	Ra XXX	+29	Radium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(1 040)	50	L582
88	Ra XXXI	+30	Radium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(1 110)	60	L582
88	Ra XXXII	+31	Radium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(1 180)	60	L582
88	Ra XXXIII	+32	Radium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(1 250)	60	L582
88	Ra XXXIV	+33	Radium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(1 320)	70	L582
88	Ra XXXV	+34	Radium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(1 390)	70	L582
88	Ra XXXVI	+35	Radium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(1 460)	70	L582
88	Ra XXXVII	+36	Radium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(1 530)	80	L582
88	Ra XXXVIII	+37	Radium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(1 610)	80	L582
88	Ra XXXIX	+38	Radium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(1 680)	80	L582
88	Ra XL	+39	Radium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(1 750)	90	L582
88	Ra XLI	+40	Radium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(1 820)	90	L582
88	Ra XLII	+41	Radium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(1 880)	100	L582
88	Ra XLIII	+42	Radium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(2 208)	4	L8672c99
88	Ra XLIV	+43	Radium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(2 271)	4	L8672c99
88	Ra XLV	+44	Radium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(2 338)	4	L8672c99
88	Ra XLVI	+45	Radium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(2 409)	4	L8672c99
88	Ra XLVII	+46	Radium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(2 477)	4	L8672c99
88	Ra XLVIII	+47	Radium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(2 544)	4	L8672c99
88	Ra XLIX	+48	Radium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(2 662)	4	L8672c99
88	Ra L	+49	Radium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(2 731)	4	L8672c99
88	Ra LI	+50	Radium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(2 806)	4	L8672c99
88	Ra LII	+51	Radium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(2 876)	4	L8672c99
88	Ra LIII	+52	Radium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(3 155)	4	L8672c99
88	Ra LIV	+53	Radium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(3 224)	5	L8672c99
88	Ra LV	+54	Radium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(3 298)	5	L8672c99
88	Ra LVI	+55	Radium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(3 368)	5	L8672c99
88	Ra LVII	+56	Radium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(3 682)	5	L8672c99
88	Ra LVIII	+57	Radium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(3 762)	6	L8672c99
88	Ra LIX	+58	Radium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(3 959)	6	L8672c99
88	Ra LX	+59	Radium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[4 040]	4	L10278
88	Ra LXI	+60	Radium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(6 565)	10	L8672c99
88	Ra LXII	+61	Radium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(6 718)	12	L8672c99
88	Ra LXIII	+62	Radium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(6 881)	15	L8672c99
88	Ra LXIV	+63	Radium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(7 056)	19	L8672c99
88	Ra LXV	+64	Radium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(7 222)	24	L8672c99
88	Ra LXVI	+65	Radium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(7 380)	30	L8672c99
88	Ra LXVII	+66	Radium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(7 720)	40	L8672c99
88	Ra LXVIII	+67	Radium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(7 890)	40	L8672c99
88	Ra LXIX	+68	Radium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(8 080)	50	L8672c99
88	Ra LXX	+69	Radium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(8 250)	50	L8672c99
88	Ra LXXI	+70	Radium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(8 730)	60	L8672c99
88	Ra LXXII	+71	Radium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(8 880)	60	L8672c99
88	Ra LXXIII	+72	Radium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(9 040)	70	L8672c99
88	Ra LXXIV	+73	Radium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(9 200)	90	L8672c99
88	Ra LXXV	+74	Radium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(10 190)	90	L8672c99
88	Ra LXXVI	+75	Radium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(10 360)	100	L8672c99
88	Ra LXXVII	+76	Radium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(10 720)	110	L8672c99
88	Ra LXXVIII	+77	Radium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(10 890)	120	L8672c99
88	Ra LXXIX	+78	Radium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(22 900)	120	L8672c99
88	Ra LXXX	+79	Radium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(23 300)	140	L8672c99
88	Ra LXXXI	+80	Radium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(23 750)	150	L8672c99
88	Ra LXXXII	+81	Radium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(24 160)	160	L8672c99
88	Ra LXXXIII	+82	Radium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(27 830)	170	L8672c99
88	Ra LXXXIV	+83	Radium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(28 370)	190	L8672c99
88	Ra LXXXV	+84	Radium	Be	1s²2s²	¹S₀	2s ²S_1/2	(29 050)	200	L8672c99
88	Ra LXXXVI	+85	Radium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(29 479.8)	0.5	L16264c99
88	Ra LXXXVII	+86	Radium	He	1s²	¹S₀	1s ²S_1/2	(116 848.7)	0.9	L10054
88	Ra LXXXVIII	+87	Radium	H	1s	²S_¹/₂		(118 931.3)	1.9	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Ac (all spectra) 89 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
89	Ac I	0	Actinium	Ac	[Rn]6d7s²	²D_³/₂	6p⁶7s² ¹S₀	5.380226	0.000024	L17893
89	Ac II	+1	Actinium	Ra	[Rn]7s²	¹S₀	6p⁶7s ²S_1/2	[11.75]	0.03	L15123
89	Ac III	+2	Actinium	Fr	[Rn]7s	²S_¹/₂	6p⁶ ¹S₀	(17.431)	0.020	L12354c99
89	Ac IV	+3	Actinium	Rn	[Hg]6p⁶	¹S₀	6p⁵ ²P°_3/2	[44.8]	1.4	L13741
89	Ac V	+4	Actinium	At	[Hg]6p⁵	²P°_³/₂	6p⁴ ³P₂	(55.0)	1.9	L8672c99
89	Ac VI	+5	Actinium	Po	[Hg]6p⁴	³P₂	6p³ ⁴S°_3/2	(67.0)	2.0	L8672c99
89	Ac VII	+6	Actinium	Bi	[Hg]6p³	⁴S°_³/₂	6p² ³P₀	(79.0)	2.0	L8672c99
89	Ac VIII	+7	Actinium	Pb	[Hg]6p²	³P₀	6p ²P°_1/2	(98.9)	2.1	L8672c99
89	Ac IX	+8	Actinium	Tl	[Hg]6p	²P°_¹/₂	6s² ¹S₀	(113.9)	2.2	L8672c99
89	Ac X	+9	Actinium	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	(143.9)	2.2	L8672c99
89	Ac XI	+10	Actinium	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	(161.1)	2.4	L8672c99
89	Ac XII	+11	Actinium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(233.0)	2.5	L8672c99
89	Ac XIII	+12	Actinium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(255)	3	L8672c99
89	Ac XIV	+13	Actinium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(279)	3	L8672c99
89	Ac XV	+14	Actinium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(305)	3	L8672c99
89	Ac XVI	+15	Actinium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(330)	3	L8672c99
89	Ac XVII	+16	Actinium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(355)	3	L8672c99
89	Ac XVIII	+17	Actinium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(390)	3	L8672c99
89	Ac XIX	+18	Actinium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(416)	3	L8672c99
89	Ac XX	+19	Actinium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(444)	4	L8672c99
89	Ac XXI	+20	Actinium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(470)	4	L8672c99
89	Ac XXII	+21	Actinium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	(610)	30	L582
89	Ac XXIII	+22	Actinium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(640)	30	L582
89	Ac XXIV	+23	Actinium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(670)	30	L582
89	Ac XXV	+24	Actinium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(710)	40	L582
89	Ac XXVI	+25	Actinium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(780)	40	L582
89	Ac XXVII	+26	Actinium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(820)	40	L582
89	Ac XXVIII	+27	Actinium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2	(920)	50	L582
89	Ac XXIX	+28	Actinium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀	(950)	50	L582
89	Ac XXX	+29	Actinium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2	(1 030)	50	L582
89	Ac XXXI	+30	Actinium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(1 100)	50	L582
89	Ac XXXII	+31	Actinium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(1 170)	60	L582
89	Ac XXXIII	+32	Actinium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(1 240)	60	L582
89	Ac XXXIV	+33	Actinium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(1 310)	70	L582
89	Ac XXXV	+34	Actinium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(1 380)	70	L582
89	Ac XXXVI	+35	Actinium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(1 460)	70	L582
89	Ac XXXVII	+36	Actinium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(1 530)	80	L582
89	Ac XXXVIII	+37	Actinium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(1 610)	80	L582
89	Ac XXXIX	+38	Actinium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(1 680)	80	L582
89	Ac XL	+39	Actinium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(1 750)	90	L582
89	Ac XLI	+40	Actinium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(1 820)	90	L582
89	Ac XLII	+41	Actinium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(1 900)	100	L582
89	Ac XLIII	+42	Actinium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(1 970)	100	L582
89	Ac XLIV	+43	Actinium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(2 298)	4	L8672c99
89	Ac XLV	+44	Actinium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(2 362)	4	L8672c99
89	Ac XLVI	+45	Actinium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(2 430)	4	L8672c99
89	Ac XLVII	+46	Actinium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(2 503)	4	L8672c99
89	Ac XLVIII	+47	Actinium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(2 572)	4	L8672c99
89	Ac XLIX	+48	Actinium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(2 639)	4	L8672c99
89	Ac L	+49	Actinium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(2 762)	4	L8672c99
89	Ac LI	+50	Actinium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(2 833)	4	L8672c99
89	Ac LII	+51	Actinium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(2 908)	4	L8672c99
89	Ac LIII	+52	Actinium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(2 980)	4	L8672c99
89	Ac LIV	+53	Actinium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(3 264)	5	L8672c99
89	Ac LV	+54	Actinium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(3 334)	5	L8672c99
89	Ac LVI	+55	Actinium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(3 409)	5	L8672c99
89	Ac LVII	+56	Actinium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(3 479)	5	L8672c99
89	Ac LVIII	+57	Actinium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(3 811)	6	L8672c99
89	Ac LIX	+58	Actinium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(3 893)	6	L8672c99
89	Ac LX	+59	Actinium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(4 093)	7	L8672c99
89	Ac LXI	+60	Actinium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[4 175]	4	L10278
89	Ac LXII	+61	Actinium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(6 767)	12	L8672c99
89	Ac LXIII	+62	Actinium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(6 923)	15	L8672c99
89	Ac LXIV	+63	Actinium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(7 088)	19	L8672c99
89	Ac LXV	+64	Actinium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(7 265)	24	L8672c99
89	Ac LXVI	+65	Actinium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(7 430)	30	L8672c99
89	Ac LXVII	+66	Actinium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(7 600)	40	L8672c99
89	Ac LXVIII	+67	Actinium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(7 950)	40	L8672c99
89	Ac LXIX	+68	Actinium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(8 120)	50	L8672c99
89	Ac LXX	+69	Actinium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(8 310)	50	L8672c99
89	Ac LXXI	+70	Actinium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(8 480)	60	L8672c99
89	Ac LXXII	+71	Actinium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(8 970)	60	L8672c99
89	Ac LXXIII	+72	Actinium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(9 120)	70	L8672c99
89	Ac LXXIV	+73	Actinium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(9 290)	90	L8672c99
89	Ac LXXV	+74	Actinium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(9 440)	90	L8672c99
89	Ac LXXVI	+75	Actinium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(10 480)	100	L8672c99
89	Ac LXXVII	+76	Actinium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(10 660)	110	L8672c99
89	Ac LXXVIII	+77	Actinium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(11 030)	120	L8672c99
89	Ac LXXIX	+78	Actinium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(11 200)	120	L8672c99
89	Ac LXXX	+79	Actinium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(23 480)	140	L8672c99
89	Ac LXXXI	+80	Actinium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(23 890)	150	L8672c99
89	Ac LXXXII	+81	Actinium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(24 340)	160	L8672c99
89	Ac LXXXIII	+82	Actinium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(24 760)	170	L8672c99
89	Ac LXXXIV	+83	Actinium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(28 610)	190	L8672c99
89	Ac LXXXV	+84	Actinium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(29 160)	200	L8672c99
89	Ac LXXXVI	+85	Actinium	Be	1s²2s²	¹S₀	2s ²S_1/2	(29 850)	220	L8672c99
89	Ac LXXXVII	+86	Actinium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(30 293.1)	0.5	L16264c99
89	Ac LXXXVIII	+87	Actinium	He	1s²	¹S₀	1s ²S_1/2	(119 938.6)	1.0	L10054
89	Ac LXXXIX	+88	Actinium	H	1s	²S_¹/₂		(122 062.9)	2.0	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Th (all spectra) 90 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
90	Th I	0	Thorium	Th	[Rn]6d²7s²	³F₂	6d7s² ²D_3/2	6.30670	0.00025	L15992
90	Th II	+1	Thorium	Ac	[Rn]6d7s²	²D_³/₂	5f6d ³H°₄	12.10	0.20	L18620
90	Th III	+2	Thorium	Ra	[Rn]5f6d	³H°₄	5f6p⁶ ²F°_5/2	[18.32]	0.05	L14620,L5541
90	Th IV	+3	Thorium	Fr	[Rn]5f	²F°_⁵/₂	6p⁶ ¹S₀	28.648	0.025	L14620,L10110
90	Th V	+4	Thorium	Rn	[Hg]6p⁶	¹S₀	6p⁵ ²P°_3/2	(58.0)	1.9	L8672c99
90	Th VI	+5	Thorium	At	[Hg]6p⁵	²P°_³/₂	6p⁴ ³P₂	(69.1)	2.0	L8672c99
90	Th VII	+6	Thorium	Po	[Hg]6p⁴	³P₂	6p³ ⁴S°_3/2	(82.0)	2.0	L8672c99
90	Th VIII	+7	Thorium	Bi	[Hg]6p³	⁴S°_³/₂	6p² ³P₀	(95.0)	2.1	L8672c99
90	Th IX	+8	Thorium	Pb	[Hg]6p²	³P₀	6p ²P°_1/2	(118.0)	2.2	L8672c99
90	Th X	+9	Thorium	Tl	[Hg]6p	²P°_¹/₂	6s² ¹S₀	(133.0)	2.2	L8672c99
90	Th XI	+10	Thorium	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	(165.0)	2.4	L8672c99
90	Th XII	+11	Thorium	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	(181.0)	2.5	L8672c99
90	Th XIII	+12	Thorium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(262)	3	L8672c99
90	Th XIV	+13	Thorium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(285)	3	L8672c99
90	Th XV	+14	Thorium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(310)	3	L8672c99
90	Th XVI	+15	Thorium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(336)	3	L8672c99
90	Th XVII	+16	Thorium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(362)	3	L8672c99
90	Th XVIII	+17	Thorium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(389)	3	L8672c99
90	Th XIX	+18	Thorium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(424)	3	L8672c99
90	Th XX	+19	Thorium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(451)	4	L8672c99
90	Th XXI	+20	Thorium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(480)	4	L8672c99
90	Th XXII	+21	Thorium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(508)	4	L8672c99
90	Th XXIII	+22	Thorium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	(650)	40	L582
90	Th XXIV	+23	Thorium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(680)	30	L582
90	Th XXV	+24	Thorium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(720)	40	L582
90	Th XXVI	+25	Thorium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(750)	40	L582
90	Th XXVII	+26	Thorium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(830)	40	L582
90	Th XXVIII	+27	Thorium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(870)	40	L582
90	Th XXIX	+28	Thorium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2	(970)	50	L582
90	Th XXX	+29	Thorium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀	(1 010)	50	L582
90	Th XXXI	+30	Thorium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2	(1 090)	50	L582
90	Th XXXII	+31	Thorium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(1 160)	60	L582
90	Th XXXIII	+32	Thorium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(1 240)	60	L582
90	Th XXXIV	+33	Thorium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(1 310)	60	L582
90	Th XXXV	+34	Thorium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(1 380)	70	L582
90	Th XXXVI	+35	Thorium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(1 460)	70	L582
90	Th XXXVII	+36	Thorium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(1 530)	80	L582
90	Th XXXVIII	+37	Thorium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(1 600)	80	L582
90	Th XXXIX	+38	Thorium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(1 680)	80	L582
90	Th XL	+39	Thorium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(1 760)	90	L582
90	Th XLI	+40	Thorium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(1 830)	90	L582
90	Th XLII	+41	Thorium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(1 910)	100	L582
90	Th XLIII	+42	Thorium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(1 980)	100	L582
90	Th XLIV	+43	Thorium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(2 060)	100	L582
90	Th XLV	+44	Thorium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(2 390)	4	L8672c99
90	Th XLVI	+45	Thorium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(2 455)	4	L8672c99
90	Th XLVII	+46	Thorium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(2 524)	4	L8672c99
90	Th XLVIII	+47	Thorium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(2 598)	4	L8672c99
90	Th XLIX	+48	Thorium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(2 669)	4	L8672c99
90	Th L	+49	Thorium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(2 737)	4	L8672c99
90	Th LI	+50	Thorium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(2 864)	4	L8672c99
90	Th LII	+51	Thorium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(2 935)	4	L8672c99
90	Th LIII	+52	Thorium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(3 013)	4	L8672c99
90	Th LIV	+53	Thorium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(3 086)	5	L8672c99
90	Th LV	+54	Thorium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(3 375)	5	L8672c99
90	Th LVI	+55	Thorium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(3 445)	5	L8672c99
90	Th LVII	+56	Thorium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(3 522)	5	L8672c99
90	Th LVIII	+57	Thorium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(3 593)	6	L8672c99
90	Th LIX	+58	Thorium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(3 943)	6	L8672c99
90	Th LX	+59	Thorium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(4 025)	7	L8672c99
90	Th LXI	+60	Thorium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(4 230)	10	L8672c99
90	Th LXII	+61	Thorium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[4 313]	4	L10278
90	Th LXIII	+62	Thorium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(6 972)	15	L8672c99
90	Th LXIV	+63	Thorium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(7 130)	19	L8672c99
90	Th LXV	+64	Thorium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(7 299)	24	L8672c99
90	Th LXVI	+65	Thorium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(7 480)	30	L8672c99
90	Th LXVII	+66	Thorium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(7 650)	40	L8672c99
90	Th LXVIII	+67	Thorium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(7 810)	40	L8672c99
90	Th LXIX	+68	Thorium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(8 180)	50	L8672c99
90	Th LXX	+69	Thorium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(8 350)	50	L8672c99
90	Th LXXI	+70	Thorium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(8 550)	60	L8672c99
90	Th LXXII	+71	Thorium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(8 720)	60	L8672c99
90	Th LXXIII	+72	Thorium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(9 220)	70	L8672c99
90	Th LXXIV	+73	Thorium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(9 370)	90	L8672c99
90	Th LXXV	+74	Thorium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(9 540)	90	L8672c99
90	Th LXXVI	+75	Thorium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(9 690)	100	L8672c99
90	Th LXXVII	+76	Thorium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(10 790)	110	L8672c99
90	Th LXXVIII	+77	Thorium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(10 970)	120	L8672c99
90	Th LXXIX	+78	Thorium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(11 340)	120	L8672c99
90	Th LXXX	+79	Thorium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(11 510)	140	L8672c99
90	Th LXXXI	+80	Thorium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(24 060)	150	L8672c99
90	Th LXXXII	+81	Thorium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(24 480)	160	L8672c99
90	Th LXXXIII	+82	Thorium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(24 940)	170	L8672c99
90	Th LXXXIV	+83	Thorium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(25 360)	190	L8672c99
90	Th LXXXV	+84	Thorium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(29 410)	200	L8672c99
90	Th LXXXVI	+85	Thorium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(29 970)	220	L8672c99
90	Th LXXXVII	+86	Thorium	Be	1s²2s²	¹S₀	2s ²S_1/2	(30 680)	240	L8672c99
90	Th LXXXVIII	+87	Thorium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(31 122.8)	0.6	L16264c99
90	Th LXXXIX	+88	Thorium	He	1s²	¹S₀	1s ²S_1/2	(123 086.4)	1.0	L10054
90	Th XC	+89	Thorium	H	1s	²S_¹/₂		(125 253.4)	2.2	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Pa (all spectra) 91 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
91	Pa I	0	Protactinium	Pa	[Rn]5f²6d7s²	⁴K_¹¹/₂	5f²7s² ³H₄	[5.89]	0.12	L16359
91	Pa II	+1	Protactinium	Th	[Rn]5f²7s²	³H₄	5f²6d ⁴I_11/2	[11.9]	0.4	L13741c99
91	Pa III	+2	Protactinium	Ac	[Rn]5f²6d	⁴I_¹¹/₂	5f²6p⁶ ³H₄	[18.6]	0.4	L13741c99
91	Pa IV	+3	Protactinium	Ra	[Rn]5f²	³H₄	5f6p⁶ ²F°_5/2	[30.9]	0.4	L13741c99
91	Pa V	+4	Protactinium	Fr	[Rn]5f	²F°_⁵/₂	6p⁶ ¹S₀	(44.3)	0.4	L12354c99
91	Pa VI	+5	Protactinium	Rn	[Hg]6p⁶	¹S₀	6p⁵ ²P°_3/2	(72.0)	2.0	L8672c99
91	Pa VII	+6	Protactinium	At	[Hg]6p⁵	²P°_³/₂	6p⁴ ³P₂	(85.1)	2.0	L8672c99
91	Pa VIII	+7	Protactinium	Po	[Hg]6p⁴	³P₂	6p³ ⁴S°_3/2	(98.9)	2.1	L8672c99
91	Pa IX	+8	Protactinium	Bi	[Hg]6p³	⁴S°_³/₂	6p² ³P₀	(111.0)	2.2	L8672c99
91	Pa X	+9	Protactinium	Pb	[Hg]6p²	³P₀	6p ²P°_1/2	(137.0)	2.2	L8672c99
91	Pa XI	+10	Protactinium	Tl	[Hg]6p	²P°_¹/₂	6s² ¹S₀	(153.0)	2.4	L8672c99
91	Pa XII	+11	Protactinium	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	(187.0)	2.5	L8672c99
91	Pa XIII	+12	Protactinium	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	(203)	3	L8672c99
91	Pa XIV	+13	Protactinium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(292)	3	L8672c99
91	Pa XV	+14	Protactinium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(316)	3	L8672c99
91	Pa XVI	+15	Protactinium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(342)	3	L8672c99
91	Pa XVII	+16	Protactinium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(369)	3	L8672c99
91	Pa XVIII	+17	Protactinium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(395)	3	L8672c99
91	Pa XIX	+18	Protactinium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(423)	3	L8672c99
91	Pa XX	+19	Protactinium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(460)	4	L8672c99
91	Pa XXI	+20	Protactinium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(488)	4	L8672c99
91	Pa XXII	+21	Protactinium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(518)	4	L8672c99
91	Pa XXIII	+22	Protactinium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(546)	4	L8672c99
91	Pa XXIV	+23	Protactinium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	(690)	40	L582
91	Pa XXV	+24	Protactinium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(720)	40	L582
91	Pa XXVI	+25	Protactinium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(760)	40	L582
91	Pa XXVII	+26	Protactinium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(790)	40	L582
91	Pa XXVIII	+27	Protactinium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(880)	40	L582
91	Pa XXIX	+28	Protactinium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(920)	50	L582
91	Pa XXX	+29	Protactinium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2	(1 020)	50	L582
91	Pa XXXI	+30	Protactinium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀	(1 060)	50	L582
91	Pa XXXII	+31	Protactinium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2	(1 150)	60	L582
91	Pa XXXIII	+32	Protactinium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(1 220)	60	L582
91	Pa XXXIV	+33	Protactinium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(1 300)	60	L582
91	Pa XXXV	+34	Protactinium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(1 370)	70	L582
91	Pa XXXVI	+35	Protactinium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(1 450)	70	L582
91	Pa XXXVII	+36	Protactinium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(1 520)	80	L582
91	Pa XXXVIII	+37	Protactinium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(1 600)	80	L582
91	Pa XXXIX	+38	Protactinium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(1 670)	80	L582
91	Pa XL	+39	Protactinium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(1 760)	90	L582
91	Pa XLI	+40	Protactinium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(1 830)	90	L582
91	Pa XLII	+41	Protactinium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(1 910)	100	L582
91	Pa XLIII	+42	Protactinium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(1 980)	100	L582
91	Pa XLIV	+43	Protactinium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(2 060)	100	L582
91	Pa XLV	+44	Protactinium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(2 130)	110	L582
91	Pa XLVI	+45	Protactinium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(2 483)	4	L8672c99
91	Pa XLVII	+46	Protactinium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(2 550)	4	L8672c99
91	Pa XLVIII	+47	Protactinium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(2 620)	4	L8672c99
91	Pa XLIX	+48	Protactinium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(2 696)	4	L8672c99
91	Pa L	+49	Protactinium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(2 766)	4	L8672c99
91	Pa LI	+50	Protactinium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(2 837)	4	L8672c99
91	Pa LII	+51	Protactinium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(2 968)	4	L8672c99
91	Pa LIII	+52	Protactinium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(3 040)	4	L8672c99
91	Pa LIV	+53	Protactinium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(3 119)	5	L8672c99
91	Pa LV	+54	Protactinium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(3 193)	5	L8672c99
91	Pa LVI	+55	Protactinium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(3 488)	5	L8672c99
91	Pa LVII	+56	Protactinium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(3 558)	5	L8672c99
91	Pa LVIII	+57	Protactinium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(3 637)	6	L8672c99
91	Pa LIX	+58	Protactinium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(3 709)	6	L8672c99
91	Pa LX	+59	Protactinium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(4 077)	7	L8672c99
91	Pa LXI	+60	Protactinium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(4 161)	10	L8672c99
91	Pa LXII	+61	Protactinium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(4 370)	12	L8672c99
91	Pa LXIII	+62	Protactinium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[4 454]	5	L10278
91	Pa LXIV	+63	Protactinium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(7 181)	19	L8672c99
91	Pa LXV	+64	Protactinium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(7 341)	24	L8672c99
91	Pa LXVI	+65	Protactinium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(7 510)	30	L8672c99
91	Pa LXVII	+66	Protactinium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(7 690)	40	L8672c99
91	Pa LXVIII	+67	Protactinium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(7 870)	40	L8672c99
91	Pa LXIX	+68	Protactinium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(8 040)	50	L8672c99
91	Pa LXX	+69	Protactinium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(8 410)	50	L8672c99
91	Pa LXXI	+70	Protactinium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(8 590)	60	L8672c99
91	Pa LXXII	+71	Protactinium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(8 780)	60	L8672c99
91	Pa LXXIII	+72	Protactinium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(8 960)	70	L8672c99
91	Pa LXXIV	+73	Protactinium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(9 460)	90	L8672c99
91	Pa LXXV	+74	Protactinium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(9 620)	90	L8672c99
91	Pa LXXVI	+75	Protactinium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(9 790)	100	L8672c99
91	Pa LXXVII	+76	Protactinium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(9 950)	110	L8672c99
91	Pa LXXVIII	+77	Protactinium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(11 100)	120	L8672c99
91	Pa LXXIX	+78	Protactinium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(11 290)	120	L8672c99
91	Pa LXXX	+79	Protactinium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(11 660)	140	L8672c99
91	Pa LXXXI	+80	Protactinium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(11 840)	150	L8672c99
91	Pa LXXXII	+81	Protactinium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(24 660)	160	L8672c99
91	Pa LXXXIII	+82	Protactinium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(25 080)	170	L8672c99
91	Pa LXXXIV	+83	Protactinium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(25 540)	190	L8672c99
91	Pa LXXXV	+84	Protactinium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(25 970)	200	L8672c99
91	Pa LXXXVI	+85	Protactinium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(30 230)	220	L8672c99
91	Pa LXXXVII	+86	Protactinium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(30 800)	240	L8672c99
91	Pa LXXXVIII	+87	Protactinium	Be	1s²2s²	¹S₀	2s ²S_1/2	(31 520)	250	L8672c99
91	Pa LXXXIX	+88	Protactinium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(31 971.6)	0.6	L16264c99
91	Pa XC	+89	Protactinium	He	1s²	¹S₀	1s ²S_1/2	(126 296.6)	1.0	L10054
91	Pa XCI	+90	Protactinium	H	1s	²S_¹/₂		(128 507.1)	2.5	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data U (all spectra) 92 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
92	U I	0	Uranium	U	[Rn]5f³6d7s²	⁵L°₆	5f³7s² ⁴I°_9/2	6.19405	0.00006	L5494,L7765
92	U II	+1	Uranium	Pa	[Rn]5f³7s²	⁴I°_⁹/₂	5f⁴ ⁵I₄	11.6	0.4	L14620
92	U III	+2	Uranium	Th	[Rn]5f⁴	⁵I₄	5f³6p⁶ ⁴I°_9/2	19.8	0.3	L14620
92	U IV	+3	Uranium	Ac	[Rn]5f³	⁴I°_⁹/₂	5f²6p⁶ ³H₄	36.7	1.0	L14620
92	U V	+4	Uranium	Ra	[Rn]5f²	³H₄	5f6p⁶ ²F°_5/2	(46.0)	1.9	L8672c99
92	U VI	+5	Uranium	Fr	[Rn]5f	²F°_⁵/₂	6p⁶ ¹S₀	[62.0]	1.6	L14620
92	U VII	+6	Uranium	Rn	[Hg]6p⁶	¹S₀	6p⁵ ²P°_3/2	(89.0)	2.0	L8672c99
92	U VIII	+7	Uranium	At	[Hg]6p⁵	²P°_³/₂	6p⁴ ³P₂	(101.0)	2.1	L8672c99
92	U IX	+8	Uranium	Po	[Hg]6p⁴	³P₂	6p³ ⁴S°_3/2	(116.0)	2.2	L8672c99
92	U X	+9	Uranium	Bi	[Hg]6p³	⁴S°_³/₂	6p² ³P₀	(128.9)	2.2	L8672c99
92	U XI	+10	Uranium	Pb	[Hg]6p²	³P₀	6p ²P°_1/2	(158.0)	2.4	L8672c99
92	U XII	+11	Uranium	Tl	[Hg]6p	²P°_¹/₂	6s² ¹S₀	(173.0)	2.5	L8672c99
92	U XIII	+12	Uranium	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	(210)	3	L8672c99
92	U XIV	+13	Uranium	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	(227)	3	L8672c99
92	U XV	+14	Uranium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(323)	3	L8672c99
92	U XVI	+15	Uranium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(348)	3	L8672c99
92	U XVII	+16	Uranium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(375)	3	L8672c99
92	U XVIII	+17	Uranium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(402)	3	L8672c99
92	U XIX	+18	Uranium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(431)	3	L8672c99
92	U XX	+19	Uranium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(458)	4	L8672c99
92	U XXI	+20	Uranium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(497)	4	L8672c99
92	U XXII	+21	Uranium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(525)	4	L8672c99
92	U XXIII	+22	Uranium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(557)	4	L8672c99
92	U XXIV	+23	Uranium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(585)	4	L8672c99
92	U XXV	+24	Uranium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	(730)	40	L582
92	U XXVI	+25	Uranium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(770)	40	L582
92	U XXVII	+26	Uranium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(800)	40	L582
92	U XXVIII	+27	Uranium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(840)	40	L582
92	U XXIX	+28	Uranium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(930)	50	L582
92	U XXX	+29	Uranium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(970)	50	L582
92	U XXXI	+30	Uranium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2	(1 070)	50	L582
92	U XXXII	+31	Uranium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀	(1 110)	60	L582
92	U XXXIII	+32	Uranium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2	(1 210)	60	L582
92	U XXXIV	+33	Uranium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(1 290)	60	L582
92	U XXXV	+34	Uranium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(1 370)	70	L582
92	U XXXVI	+35	Uranium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(1 440)	70	L582
92	U XXXVII	+36	Uranium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(1 520)	80	L582
92	U XXXVIII	+37	Uranium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(1 590)	80	L582
92	U XXXIX	+38	Uranium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(1 670)	80	L582
92	U XL	+39	Uranium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(1 750)	90	L582
92	U XLI	+40	Uranium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(1 830)	90	L582
92	U XLII	+41	Uranium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(1 910)	100	L582
92	U XLIII	+42	Uranium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(1 990)	100	L582
92	U XLIV	+43	Uranium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(2 070)	100	L582
92	U XLV	+44	Uranium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(2 140)	110	L582
92	U XLVI	+45	Uranium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(2 220)	110	L582
92	U XLVII	+46	Uranium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(2 578)	4	L8672c99
92	U XLVIII	+47	Uranium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(2 646)	4	L8672c99
92	U XLIX	+48	Uranium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(2 718)	4	L8672c99
92	U L	+49	Uranium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(2 794)	4	L8672c99
92	U LI	+50	Uranium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(2 867)	4	L8672c99
92	U LII	+51	Uranium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(2 938)	4	L8672c99
92	U LIII	+52	Uranium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(3 073)	4	L8672c99
92	U LIV	+53	Uranium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(3 147)	5	L8672c99
92	U LV	+54	Uranium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(3 228)	5	L8672c99
92	U LVI	+55	Uranium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(3 301)	5	L8672c99
92	U LVII	+56	Uranium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(3 602)	5	L8672c99
92	U LVIII	+57	Uranium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(3 675)	6	L8672c99
92	U LIX	+58	Uranium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(3 753)	6	L8672c99
92	U LX	+59	Uranium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(3 827)	7	L8672c99
92	U LXI	+60	Uranium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(4 214)	10	L8672c99
92	U LXII	+61	Uranium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(4 299)	12	L8672c99
92	U LXIII	+62	Uranium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(4 513)	15	L8672c99
92	U LXIV	+63	Uranium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	[4 598]	5	L10278
92	U LXV	+64	Uranium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(7 393)	24	L8672c99
92	U LXVI	+65	Uranium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(7 550)	30	L8672c99
92	U LXVII	+66	Uranium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(7 730)	40	L8672c99
92	U LXVIII	+67	Uranium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(7 910)	40	L8672c99
92	U LXIX	+68	Uranium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(8 090)	50	L8672c99
92	U LXX	+69	Uranium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(8 260)	50	L8672c99
92	U LXXI	+70	Uranium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(8 650)	60	L8672c99
92	U LXXII	+71	Uranium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(8 830)	60	L8672c99
92	U LXXIII	+72	Uranium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(9 030)	70	L8672c99
92	U LXXIV	+73	Uranium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(9 210)	90	L8672c99
92	U LXXV	+74	Uranium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(9 720)	90	L8672c99
92	U LXXVI	+75	Uranium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(9 870)	100	L8672c99
92	U LXXVII	+76	Uranium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(10 040)	110	L8672c99
92	U LXXVIII	+77	Uranium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(10 200)	120	L8672c99
92	U LXXIX	+78	Uranium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(11 410)	120	L8672c99
92	U LXXX	+79	Uranium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(11 600)	140	L8672c99
92	U LXXXI	+80	Uranium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(11 990)	150	L8672c99
92	U LXXXII	+81	Uranium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(12 160)	160	L8672c99
92	U LXXXIII	+82	Uranium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(25 260)	170	L8672c99
92	U LXXXIV	+83	Uranium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(25 680)	190	L8672c99
92	U LXXXV	+84	Uranium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(26 150)	200	L8672c99
92	U LXXXVI	+85	Uranium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(26 590)	220	L8672c99
92	U LXXXVII	+86	Uranium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(31 060)	240	L8672c99
92	U LXXXVIII	+87	Uranium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(31 640)	250	L8672c99
92	U LXXXIX	+88	Uranium	Be	1s²2s²	¹S₀	2s ²S_1/2	(32 400)	300	L8672c99
92	U XC	+89	Uranium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(32 836.5)	0.6	L16264c99
92	U XCI	+90	Uranium	He	1s²	¹S₀	1s ²S_1/2	(129 570.3)	0.6	L12128
92	U XCII	+91	Uranium	H	1s	²S_¹/₂		(131 821)	3	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Np (all spectra) 93 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
93	Np I	0	Neptunium	Np	[Rn]5f⁴6d7s²	⁶L_¹¹/₂	5f⁴6d7s ⁷L₅	6.26554	0.00025	L15992
93	Np II	+1	Neptunium	U	[Rn]5f⁴6d7s	⁷L₅	5f⁵ ⁶H°_5/2	[11.5]	0.4	L13741c99
93	Np III	+2	Neptunium	Pa	[Rn]5f⁵	⁶H°_⁵/₂	5f⁴ ⁵I₄	[19.7]	0.4	L13741c99
93	Np IV	+3	Neptunium	Th	[Rn]5f⁴	⁵I₄	5f³6p⁶ ⁴I°_9/2	[33.8]	0.4	L13741c99
93	Np V	+4	Neptunium	Ac	[Rn]5f³	⁴I°_⁹/₂	5f²6p⁶ ³H₄	(48.0)	1.9	L8672c99
93	Np VI	+5	Neptunium	Ra	[Rn]5f²	³H₄	5f6p⁶ ²F°_5/2	(65.0)	2.0	L8672c99
93	Np VII	+6	Neptunium	Fr	[Rn]5f	²F°_⁵/₂	5f6p⁵	(92)	5	L582
93	Np VIII	+7	Neptunium	Rn	[Hg]5f6p⁵		5f6p⁴°	(107)	5	L582
93	Np IX	+8	Neptunium	At	[Hg]5f6p⁴	°	5f6p³	(121)	6	L582
93	Np X	+9	Neptunium	Po	[Hg]5f6p³		5f6p²°	(136)	7	L582
93	Np XI	+10	Neptunium	Bi	[Hg]5f6p²	°	6p² ³P₀	(151)	8	L582
93	Np XII	+11	Neptunium	Pb	[Hg]6p²	³P₀	6p ²P°_1/2	(179.0)	2.5	L8672c99
93	Np XIII	+12	Neptunium	Tl	[Hg]6p	²P°_¹/₂	6s² ¹S₀	(196)	3	L8672c99
93	Np XIV	+13	Neptunium	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	(233)	3	L8672c99
93	Np XV	+14	Neptunium	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	(252)	3	L8672c99
93	Np XVI	+15	Neptunium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(355)	3	L8672c99
93	Np XVII	+16	Neptunium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(382)	3	L8672c99
93	Np XVIII	+17	Neptunium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(408)	3	L8672c99
93	Np XIX	+18	Neptunium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(438)	3	L8672c99
93	Np XX	+19	Neptunium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(466)	4	L8672c99
93	Np XXI	+20	Neptunium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(495)	4	L8672c99
93	Np XXII	+21	Neptunium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(535)	4	L8672c99
93	Np XXIII	+22	Neptunium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(565)	4	L8672c99
93	Np XXIV	+23	Neptunium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(596)	4	L8672c99
93	Np XXV	+24	Neptunium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(626)	4	L8672c99
93	Np XXVI	+25	Neptunium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	(770)	40	L582
93	Np XXVII	+26	Neptunium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(810)	40	L582
93	Np XXVIII	+27	Neptunium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(850)	40	L582
93	Np XXIX	+28	Neptunium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(880)	40	L582
93	Np XXX	+29	Neptunium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(980)	50	L582
93	Np XXXI	+30	Neptunium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(1 020)	50	L582
93	Np XXXII	+31	Neptunium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2	(1 130)	60	L582
93	Np XXXIII	+32	Neptunium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀	(1 170)	60	L582
93	Np XXXIV	+33	Neptunium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2	(1 280)	60	L582
93	Np XXXV	+34	Neptunium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(1 360)	70	L582
93	Np XXXVI	+35	Neptunium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(1 430)	70	L582
93	Np XXXVII	+36	Neptunium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(1 510)	70	L582
93	Np XXXVIII	+37	Neptunium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(1 590)	80	L582
93	Np XXXIX	+38	Neptunium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(1 670)	80	L582
93	Np XL	+39	Neptunium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(1 740)	90	L582
93	Np XLI	+40	Neptunium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(1 820)	90	L582
93	Np XLII	+41	Neptunium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(1 910)	100	L582
93	Np XLIII	+42	Neptunium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(1 990)	100	L582
93	Np XLIV	+43	Neptunium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(2 070)	100	L582
93	Np XLV	+44	Neptunium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(2 140)	110	L582
93	Np XLVI	+45	Neptunium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(2 230)	110	L582
93	Np XLVII	+46	Neptunium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(2 310)	110	L582
93	Np XLVIII	+47	Neptunium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(2 675)	4	L8672c99
93	Np XLIX	+48	Neptunium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(2 745)	4	L8672c99
93	Np L	+49	Neptunium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(2 817)	4	L8672c99
93	Np LI	+50	Neptunium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(2 894)	4	L8672c99
93	Np LII	+51	Neptunium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(2 969)	4	L8672c99
93	Np LIII	+52	Neptunium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(3 041)	4	L8672c99
93	Np LIV	+53	Neptunium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(3 181)	5	L8672c99
93	Np LV	+54	Neptunium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(3 255)	5	L8672c99
93	Np LVI	+55	Neptunium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(3 338)	5	L8672c99
93	Np LVII	+56	Neptunium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(3 413)	5	L8672c99
93	Np LVIII	+57	Neptunium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(3 718)	6	L8672c99
93	Np LIX	+58	Neptunium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(3 792)	6	L8672c99
93	Np LX	+59	Neptunium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(3 872)	7	L8672c99
93	Np LXI	+60	Neptunium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(3 947)	10	L8672c99
93	Np LXII	+61	Neptunium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(4 353)	12	L8672c99
93	Np LXIII	+62	Neptunium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(4 441)	15	L8672c99
93	Np LXIV	+63	Neptunium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(4 658)	19	L8672c99
93	Np LXV	+64	Neptunium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	(4 744)	24	L8672c99
93	Np LXVI	+65	Neptunium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(7 610)	30	L8672c99
93	Np LXVII	+66	Neptunium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(7 770)	40	L8672c99
93	Np LXVIII	+67	Neptunium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(7 950)	40	L8672c99
93	Np LXIX	+68	Neptunium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(8 130)	50	L8672c99
93	Np LXX	+69	Neptunium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(8 310)	50	L8672c99
93	Np LXXI	+70	Neptunium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(8 480)	60	L8672c99
93	Np LXXII	+71	Neptunium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(8 890)	60	L8672c99
93	Np LXXIII	+72	Neptunium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(9 070)	70	L8672c99
93	Np LXXIV	+73	Neptunium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(9 270)	90	L8672c99
93	Np LXXV	+74	Neptunium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(9 450)	90	L8672c99
93	Np LXXVI	+75	Neptunium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(9 970)	100	L8672c99
93	Np LXXVII	+76	Neptunium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(10 130)	110	L8672c99
93	Np LXXVIII	+77	Neptunium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(10 300)	120	L8672c99
93	Np LXXIX	+78	Neptunium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(10 470)	120	L8672c99
93	Np LXXX	+79	Neptunium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(11 730)	140	L8672c99
93	Np LXXXI	+80	Neptunium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(11 930)	150	L8672c99
93	Np LXXXII	+81	Neptunium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(12 320)	160	L8672c99
93	Np LXXXIII	+82	Neptunium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(12 500)	170	L8672c99
93	Np LXXXIV	+83	Neptunium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(25 870)	190	L8672c99
93	Np LXXXV	+84	Neptunium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(26 300)	200	L8672c99
93	Np LXXXVI	+85	Neptunium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(26 770)	220	L8672c99
93	Np LXXXVII	+86	Neptunium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(27 210)	240	L8672c99
93	Np LXXXVIII	+87	Neptunium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(31 910)	250	L8672c99
93	Np LXXXIX	+88	Neptunium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(32 500)	300	L8672c99
93	Np XC	+89	Neptunium	Be	1s²2s²	¹S₀	2s ²S_1/2	(33 300)	300	L8672c99
93	Np XCI	+90	Neptunium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(33 722.2)	0.7	L16264c99
93	Np XCII	+91	Neptunium	He	1s²	¹S₀	1s ²S_1/2	(132 901.8)	1.1	L10054
93	Np XCIII	+92	Neptunium	H	1s	²S_¹/₂		(135 202)	3	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Pu (all spectra) 94 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
94	Pu I	0	Plutonium	Pu	[Rn]5f⁶7s²	⁷F₀	5f⁶7s ⁸F_1/2	6.02576	0.00025	L15992,L11260
94	Pu II	+1	Plutonium	Np	[Rn]5f⁶7s	⁸F_¹/₂	5f⁶ ⁷F₀	[11.5]	0.4	L13741c99
94	Pu III	+2	Plutonium	U	[Rn]5f⁶	⁷F₀	5f⁵ ⁶H°_5/2	[21.1]	0.4	L13741c99
94	Pu IV	+3	Plutonium	Pa	[Rn]5f⁵	⁶H°_⁵/₂	5f⁴ ⁵I₄	[35.0]	0.4	L13741c99
94	Pu V	+4	Plutonium	Th	[Rn]5f⁴	⁵I₄	5f³6p⁶ ⁴I°_9/2	(49.0)	1.9	L8672c99
94	Pu VI	+5	Plutonium	Ac	[Rn]5f³	⁴I°_⁹/₂	5f³6p⁵	(80)	4	L582
94	Pu VII	+6	Plutonium	Ra	[Hg]5f³6p⁵		5f³6p⁴°	(95)	5	L582
94	Pu VIII	+7	Plutonium	Fr	[Hg]5f³6p⁴	°	5f³6p³	(109)	5	L582
94	Pu IX	+8	Plutonium	Rn	[Hg]5f³6p³		5f³6p²°	(124)	6	L582
94	Pu X	+9	Plutonium	At	[Hg]5f³6p²	°	5f²6p²	(139)	7	L582
94	Pu XI	+10	Plutonium	Po	[Hg]5f²6p²		5f6p²°	(159)	8	L582
94	Pu XII	+11	Plutonium	Bi	[Hg]5f6p²	°	6p² ³P₀	(179)	9	L582
94	Pu XIII	+12	Plutonium	Pb	[Hg]6p²	³P₀	6p ²P°_1/2	(200)	3	L8672c99
94	Pu XIV	+13	Plutonium	Tl	[Hg]6p	²P°_¹/₂	6s² ¹S₀	(219)	3	L8672c99
94	Pu XV	+14	Plutonium	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	(258)	3	L8672c99
94	Pu XVI	+15	Plutonium	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	(278)	3	L8672c99
94	Pu XVII	+16	Plutonium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(389)	3	L8672c99
94	Pu XVIII	+17	Plutonium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(416)	3	L8672c99
94	Pu XIX	+18	Plutonium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(444)	3	L8672c99
94	Pu XX	+19	Plutonium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(474)	4	L8672c99
94	Pu XXI	+20	Plutonium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(503)	4	L8672c99
94	Pu XXII	+21	Plutonium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(532)	4	L8672c99
94	Pu XXIII	+22	Plutonium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(575)	4	L8672c99
94	Pu XXIV	+23	Plutonium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(605)	4	L8672c99
94	Pu XXV	+24	Plutonium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(637)	4	L8672c99
94	Pu XXVI	+25	Plutonium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(668)	4	L8672c99
94	Pu XXVII	+26	Plutonium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	(820)	40	L582
94	Pu XXVIII	+27	Plutonium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(850)	40	L582
94	Pu XXIX	+28	Plutonium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(890)	40	L582
94	Pu XXX	+29	Plutonium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(930)	50	L582
94	Pu XXXI	+30	Plutonium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(1 030)	50	L582
94	Pu XXXII	+31	Plutonium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(1 070)	50	L582
94	Pu XXXIII	+32	Plutonium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2	(1 180)	60	L582
94	Pu XXXIV	+33	Plutonium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀	(1 220)	60	L582
94	Pu XXXV	+34	Plutonium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2	(1 340)	70	L582
94	Pu XXXVI	+35	Plutonium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(1 420)	70	L582
94	Pu XXXVII	+36	Plutonium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(1 500)	70	L582
94	Pu XXXVIII	+37	Plutonium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(1 580)	70	L582
94	Pu XXXIX	+38	Plutonium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(1 660)	80	L582
94	Pu XL	+39	Plutonium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(1 740)	90	L582
94	Pu XLI	+40	Plutonium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(1 820)	90	L582
94	Pu XLII	+41	Plutonium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(1 890)	90	L582
94	Pu XLIII	+42	Plutonium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(1 990)	100	L582
94	Pu XLIV	+43	Plutonium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(2 070)	100	L582
94	Pu XLV	+44	Plutonium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(2 150)	110	L582
94	Pu XLVI	+45	Plutonium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(2 230)	110	L582
94	Pu XLVII	+46	Plutonium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(2 310)	110	L582
94	Pu XLVIII	+47	Plutonium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(2 390)	120	L582
94	Pu XLIX	+48	Plutonium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(2 774)	4	L8672c99
94	Pu L	+49	Plutonium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(2 844)	4	L8672c99
94	Pu LI	+50	Plutonium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(2 918)	4	L8672c99
94	Pu LII	+51	Plutonium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(2 997)	4	L8672c99
94	Pu LIII	+52	Plutonium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(3 072)	4	L8672c99
94	Pu LIV	+53	Plutonium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(3 146)	5	L8672c99
94	Pu LV	+54	Plutonium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(3 290)	5	L8672c99
94	Pu LVI	+55	Plutonium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(3 366)	5	L8672c99
94	Pu LVII	+56	Plutonium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(3 449)	5	L8672c99
94	Pu LVIII	+57	Plutonium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(3 527)	6	L8672c99
94	Pu LIX	+58	Plutonium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(3 836)	6	L8672c99
94	Pu LX	+59	Plutonium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(3 911)	7	L8672c99
94	Pu LXI	+60	Plutonium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(3 993)	10	L8672c99
94	Pu LXII	+61	Plutonium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(4 068)	12	L8672c99
94	Pu LXIII	+62	Plutonium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(4 496)	15	L8672c99
94	Pu LXIV	+63	Plutonium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(4 585)	19	L8672c99
94	Pu LXV	+64	Plutonium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(4 807)	24	L8672c99
94	Pu LXVI	+65	Plutonium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	(4 890)	30	L8672c99
94	Pu LXVII	+66	Plutonium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(7 830)	40	L8672c99
94	Pu LXVIII	+67	Plutonium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(7 990)	40	L8672c99
94	Pu LXIX	+68	Plutonium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(8 170)	50	L8672c99
94	Pu LXX	+69	Plutonium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(8 360)	50	L8672c99
94	Pu LXXI	+70	Plutonium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(8 540)	60	L8672c99
94	Pu LXXII	+71	Plutonium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(8 710)	60	L8672c99
94	Pu LXXIII	+72	Plutonium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(9 130)	70	L8672c99
94	Pu LXXIV	+73	Plutonium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(9 310)	90	L8672c99
94	Pu LXXV	+74	Plutonium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(9 520)	90	L8672c99
94	Pu LXXVI	+75	Plutonium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(9 700)	100	L8672c99
94	Pu LXXVII	+76	Plutonium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(10 230)	110	L8672c99
94	Pu LXXVIII	+77	Plutonium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(10 390)	120	L8672c99
94	Pu LXXIX	+78	Plutonium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(10 570)	120	L8672c99
94	Pu LXXX	+79	Plutonium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(10 730)	140	L8672c99
94	Pu LXXXI	+80	Plutonium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(12 060)	150	L8672c99
94	Pu LXXXII	+81	Plutonium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(12 260)	160	L8672c99
94	Pu LXXXIII	+82	Plutonium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(12 660)	170	L8672c99
94	Pu LXXXIV	+83	Plutonium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(12 840)	190	L8672c99
94	Pu LXXXV	+84	Plutonium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(26 480)	200	L8672c99
94	Pu LXXXVI	+85	Plutonium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(26 920)	220	L8672c99
94	Pu LXXXVII	+86	Plutonium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(27 400)	240	L8672c99
94	Pu LXXXVIII	+87	Plutonium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(27 840)	250	L8672c99
94	Pu LXXXIX	+88	Plutonium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(32 800)	300	L8672c99
94	Pu XC	+89	Plutonium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(33 400)	300	L8672c99
94	Pu XCI	+90	Plutonium	Be	1s²2s²	¹S₀	2s ²S_1/2	(34 100)	300	L8672c99
94	Pu XCII	+91	Plutonium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(34 625.8)	0.7	L16264c99
94	Pu XCIII	+92	Plutonium	He	1s²	¹S₀	1s ²S_1/2	(136 299.2)	1.1	L10054
94	Pu XCIV	+93	Plutonium	H	1s	²S_¹/₂		(138 646)	3	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Am (all spectra) 95 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
95	Am I	0	Americium	Am	[Rn]5f⁷7s²	⁸S°_⁷/₂	5f⁷7s ⁹S°₄	5.97381	0.00025	L15992
95	Am II	+1	Americium	Pu	[Rn]5f⁷7s	⁹S°₄	5f⁷ ⁸S°_7/2	[11.7]	0.4	L13741c99
95	Am III	+2	Americium	Np	[Rn]5f⁷	⁸S°_⁷/₂	5f⁶ ⁷F₀	[21.7]	0.4	L13741c99
95	Am IV	+3	Americium	U	[Rn]5f⁶	⁷F₀	5f⁵ ⁶H°_5/2	[36.8]	0.4	L13741c99
95	Am V	+4	Americium	Pa	[Rn]5f⁵	⁶H°_⁵/₂	5f⁴ ⁵I₄	(50.0)	1.9	L8672c99
95	Am VI	+5	Americium	Th	[Rn]5f⁴	⁵I₄	5f³6p⁶ ⁴I°_9/2	(67.9)	2.0	L8672c99
95	Am VII	+6	Americium	Ac	[Rn]5f³	⁴I°_⁹/₂	5f³6p⁵	(95)	5	L582
95	Am VIII	+7	Americium	Ra	[Hg]5f³6p⁵		5f³6p⁴°	(110)	6	L582
95	Am IX	+8	Americium	Fr	[Hg]5f³6p⁴	°	5f³6p³	(125)	6	L582
95	Am X	+9	Americium	Rn	[Hg]5f³6p³		5f³6p²°	(141)	7	L582
95	Am XI	+10	Americium	At	[Hg]5f³6p²	°	5f²6p²	(163)	8	L582
95	Am XII	+11	Americium	Po	[Hg]5f²6p²		5f6p²°	(184)	9	L582
95	Am XIII	+12	Americium	Bi	[Hg]5f6p²	°	6p² ³P₀	(206)	10	L582
95	Am XIV	+13	Americium	Pb	[Hg]6p²	³P₀	6p ²P°_1/2	(225)	3	L8672c99
95	Am XV	+14	Americium	Tl	[Hg]6p	²P°_¹/₂	6s² ¹S₀	(242)	3	L8672c99
95	Am XVI	+15	Americium	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	(284)	3	L8672c99
95	Am XVII	+16	Americium	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	(305)	3	L8672c99
95	Am XVIII	+17	Americium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(424)	3	L8672c99
95	Am XIX	+18	Americium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(451)	3	L8672c99
95	Am XX	+19	Americium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(481)	4	L8672c99
95	Am XXI	+20	Americium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(511)	4	L8672c99
95	Am XXII	+21	Americium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(541)	4	L8672c99
95	Am XXIII	+22	Americium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(571)	4	L8672c99
95	Am XXIV	+23	Americium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(616)	4	L8672c99
95	Am XXV	+24	Americium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(646)	4	L8672c99
95	Am XXVI	+25	Americium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(680)	4	L8672c99
95	Am XXVII	+26	Americium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(711)	4	L8672c99
95	Am XXVIII	+27	Americium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	(870)	40	L582
95	Am XXIX	+28	Americium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(900)	50	L582
95	Am XXX	+29	Americium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(940)	50	L582
95	Am XXXI	+30	Americium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(980)	50	L582
95	Am XXXII	+31	Americium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(1 090)	50	L582
95	Am XXXIII	+32	Americium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(1 130)	60	L582
95	Am XXXIV	+33	Americium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2	(1 240)	60	L582
95	Am XXXV	+34	Americium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀	(1 280)	60	L582
95	Am XXXVI	+35	Americium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2	(1 410)	70	L582
95	Am XXXVII	+36	Americium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(1 490)	70	L582
95	Am XXXVIII	+37	Americium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(1 570)	80	L582
95	Am XXXIX	+38	Americium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(1 650)	90	L582
95	Am XL	+39	Americium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(1 730)	90	L582
95	Am XLI	+40	Americium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(1 820)	90	L582
95	Am XLII	+41	Americium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(1 900)	90	L582
95	Am XLIII	+42	Americium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(1 980)	100	L582
95	Am XLIV	+43	Americium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(2 070)	100	L582
95	Am XLV	+44	Americium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(2 160)	110	L582
95	Am XLVI	+45	Americium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(2 240)	110	L582
95	Am XLVII	+46	Americium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(2 320)	110	L582
95	Am XLVIII	+47	Americium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(2 410)	120	L582
95	Am XLIX	+48	Americium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(2 480)	120	L582
95	Am L	+49	Americium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(2 874)	4	L8672c99
95	Am LI	+50	Americium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(2 946)	4	L8672c99
95	Am LII	+51	Americium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(3 021)	4	L8672c99
95	Am LIII	+52	Americium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(3 101)	4	L8672c99
95	Am LIV	+53	Americium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(3 178)	5	L8672c99
95	Am LV	+54	Americium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(3 251)	5	L8672c99
95	Am LVI	+55	Americium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(3 402)	5	L8672c99
95	Am LVII	+56	Americium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(3 479)	5	L8672c99
95	Am LVIII	+57	Americium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(3 563)	6	L8672c99
95	Am LIX	+58	Americium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(3 641)	6	L8672c99
95	Am LX	+59	Americium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(3 956)	7	L8672c99
95	Am LXI	+60	Americium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(4 033)	10	L8672c99
95	Am LXII	+61	Americium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(4 115)	12	L8672c99
95	Am LXIII	+62	Americium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(4 191)	15	L8672c99
95	Am LXIV	+63	Americium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(4 642)	19	L8672c99
95	Am LXV	+64	Americium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(4 733)	24	L8672c99
95	Am LXVI	+65	Americium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(4 960)	30	L8672c99
95	Am LXVII	+66	Americium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	(5 050)	40	L8672c99
95	Am LXVIII	+67	Americium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(8 040)	40	L8672c99
95	Am LXIX	+68	Americium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(8 210)	50	L8672c99
95	Am LXX	+69	Americium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(8 390)	50	L8672c99
95	Am LXXI	+70	Americium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(8 590)	60	L8672c99
95	Am LXXII	+71	Americium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(8 770)	60	L8672c99
95	Am LXXIII	+72	Americium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(8 950)	70	L8672c99
95	Am LXXIV	+73	Americium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(9 380)	90	L8672c99
95	Am LXXV	+74	Americium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(9 560)	90	L8672c99
95	Am LXXVI	+75	Americium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(9 770)	100	L8672c99
95	Am LXXVII	+76	Americium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(9 960)	110	L8672c99
95	Am LXXVIII	+77	Americium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(10 490)	120	L8672c99
95	Am LXXIX	+78	Americium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(10 650)	120	L8672c99
95	Am LXXX	+79	Americium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(10 830)	140	L8672c99
95	Am LXXXI	+80	Americium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(11 000)	150	L8672c99
95	Am LXXXII	+81	Americium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(12 400)	160	L8672c99
95	Am LXXXIII	+82	Americium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(12 600)	170	L8672c99
95	Am LXXXIV	+83	Americium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(13 000)	190	L8672c99
95	Am LXXXV	+84	Americium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(13 190)	200	L8672c99
95	Am LXXXVI	+85	Americium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(27 110)	220	L8672c99
95	Am LXXXVII	+86	Americium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(27 550)	240	L8672c99
95	Am LXXXVIII	+87	Americium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(28 040)	250	L8672c99
95	Am LXXXIX	+88	Americium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(28 500)	300	L8672c99
95	Am XC	+89	Americium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(33 700)	300	L8672c99
95	Am XCI	+90	Americium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(34 300)	300	L8672c99
95	Am XCII	+91	Americium	Be	1s²2s²	¹S₀	2s ²S_1/2	(35 100)	300	L8672c99
95	Am XCIII	+92	Americium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(35 549.4)	0.7	L16264c99
95	Am XCIV	+93	Americium	He	1s²	¹S₀	1s ²S_1/2	(139 769.5)	0.7	L12128
95	Am XCV	+94	Americium	H	1s	²S_¹/₂		(142 161)	4	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Cm (all spectra) 96 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
96	Cm I	0	Curium	Cm	[Rn]5f⁷6d7s²	⁹D°₂	5f⁷7s² ⁸S°_7/2	5.99141	0.00025	L15992
96	Cm II	+1	Curium	Am	[Rn]5f⁷7s²	⁸S°_⁷/₂	5f⁸ ⁷F₆	[12.4]	0.4	L13741c99
96	Cm III	+2	Curium	Pu	[Rn]5f⁸	⁷F₆	5f⁷ ⁸S°_7/2	[20.1]	0.4	L13741c99
96	Cm IV	+3	Curium	Np	[Rn]5f⁷	⁸S°_⁷/₂	5f⁶ ⁷F₀	[37.7]	0.4	L13741c99
96	Cm V	+4	Curium	U	[Rn]5f⁶	⁷F₀	5f⁵ ⁶H°_5/2	(51.0)	1.9	L8672c99
96	Cm VI	+5	Curium	Pa	[Rn]5f⁵	⁶H°_⁵/₂	5f⁴ ⁵I₄	(69.1)	2.0	L8672c99
96	Cm VII	+6	Curium	Th	[Rn]5f⁴	⁵I₄	5f⁵6p⁴	(97)	5	L582
96	Cm VIII	+7	Curium	Ac	[Hg]5f⁵6p⁴	°	5f⁵6p³	(112)	6	L582
96	Cm IX	+8	Curium	Ra	[Hg]5f⁵6p³		5f⁵6p²°	(128)	6	L582
96	Cm X	+9	Curium	Fr	[Hg]5f⁵6p²	°	5f⁴6p²	(144)	7	L582
96	Cm XI	+10	Curium	Rn	[Hg]5f⁴6p²		5f³6p²°	(167)	8	L582
96	Cm XII	+11	Curium	At	[Hg]5f³6p²	°	5f²6p²	(190)	10	L582
96	Cm XIII	+12	Curium	Po	[Hg]5f²6p²		5f6p²°	(213)	11	L582
96	Cm XIV	+13	Curium	Bi	[Hg]5f6p²	°	5f6p	(235)	12	L582
96	Cm XV	+14	Curium	Pb	[Hg]5f6p		5f ²F°_5/2	(253)	12	L582
96	Cm XVI	+15	Curium	Tl	[Hg]5f	²F°_⁵/₂	6s² ¹S₀	(272)	14	L582
96	Cm XVII	+16	Curium	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	(311)	3	L8672c99
96	Cm XVIII	+17	Curium	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	(332)	3	L8672c99
96	Cm XIX	+18	Curium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(460)	3	L8672c99
96	Cm XX	+19	Curium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(489)	4	L8672c99
96	Cm XXI	+20	Curium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(518)	4	L8672c99
96	Cm XXII	+21	Curium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(550)	4	L8672c99
96	Cm XXIII	+22	Curium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(580)	4	L8672c99
96	Cm XXIV	+23	Curium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(611)	4	L8672c99
96	Cm XXV	+24	Curium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(657)	4	L8672c99
96	Cm XXVI	+25	Curium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(689)	4	L8672c99
96	Cm XXVII	+26	Curium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(723)	4	L8672c99
96	Cm XXVIII	+27	Curium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(755)	4	L8672c99
96	Cm XXIX	+28	Curium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	(910)	50	L582
96	Cm XXX	+29	Curium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(950)	50	L582
96	Cm XXXI	+30	Curium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(990)	50	L582
96	Cm XXXII	+31	Curium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(1 030)	50	L582
96	Cm XXXIII	+32	Curium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(1 140)	60	L582
96	Cm XXXIV	+33	Curium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(1 180)	60	L582
96	Cm XXXV	+34	Curium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2	(1 300)	60	L582
96	Cm XXXVI	+35	Curium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀	(1 340)	70	L582
96	Cm XXXVII	+36	Curium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2	(1 480)	70	L582
96	Cm XXXVIII	+37	Curium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(1 560)	80	L582
96	Cm XXXIX	+38	Curium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(1 650)	80	L582
96	Cm XL	+39	Curium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(1 730)	90	L582
96	Cm XLI	+40	Curium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(1 810)	90	L582
96	Cm XLII	+41	Curium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(1 890)	90	L582
96	Cm XLIII	+42	Curium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(1 980)	100	L582
96	Cm XLIV	+43	Curium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(2 060)	100	L582
96	Cm XLV	+44	Curium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(2 160)	110	L582
96	Cm XLVI	+45	Curium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(2 240)	110	L582
96	Cm XLVII	+46	Curium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(2 320)	120	L582
96	Cm XLVIII	+47	Curium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(2 410)	120	L582
96	Cm XLIX	+48	Curium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(2 490)	120	L582
96	Cm L	+49	Curium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(2 580)	120	L582
96	Cm LI	+50	Curium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(2 976)	4	L8672c99
96	Cm LII	+51	Curium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(3 050)	4	L8672c99
96	Cm LIII	+52	Curium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(3 125)	4	L8672c99
96	Cm LIV	+53	Curium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(3 207)	5	L8672c99
96	Cm LV	+54	Curium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(3 284)	5	L8672c99
96	Cm LVI	+55	Curium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(3 360)	5	L8672c99
96	Cm LVII	+56	Curium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(3 515)	5	L8672c99
96	Cm LVIII	+57	Curium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(3 593)	6	L8672c99
96	Cm LIX	+58	Curium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(3 679)	6	L8672c99
96	Cm LX	+59	Curium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(3 758)	7	L8672c99
96	Cm LXI	+60	Curium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(4 078)	10	L8672c99
96	Cm LXII	+61	Curium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(4 156)	12	L8672c99
96	Cm LXIII	+62	Curium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(4 239)	15	L8672c99
96	Cm LXIV	+63	Curium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(4 317)	19	L8672c99
96	Cm LXV	+64	Curium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(4 791)	24	L8672c99
96	Cm LXVI	+65	Curium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(4 880)	30	L8672c99
96	Cm LXVII	+66	Curium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(5 110)	40	L8672c99
96	Cm LXVIII	+67	Curium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	(5 200)	40	L8672c99
96	Cm LXIX	+68	Curium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(8 270)	50	L8672c99
96	Cm LXX	+69	Curium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(8 440)	50	L8672c99
96	Cm LXXI	+70	Curium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(8 620)	60	L8672c99
96	Cm LXXII	+71	Curium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(8 820)	60	L8672c99
96	Cm LXXIII	+72	Curium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(9 000)	70	L8672c99
96	Cm LXXIV	+73	Curium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(9 180)	90	L8672c99
96	Cm LXXV	+74	Curium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(9 630)	90	L8672c99
96	Cm LXXVI	+75	Curium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(9 820)	100	L8672c99
96	Cm LXXVII	+76	Curium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(10 020)	110	L8672c99
96	Cm LXXVIII	+77	Curium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(10 220)	120	L8672c99
96	Cm LXXIX	+78	Curium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(10 760)	120	L8672c99
96	Cm LXXX	+79	Curium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(10 920)	140	L8672c99
96	Cm LXXXI	+80	Curium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(11 100)	150	L8672c99
96	Cm LXXXII	+81	Curium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(11 270)	160	L8672c99
96	Cm LXXXIII	+82	Curium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(12 740)	170	L8672c99
96	Cm LXXXIV	+83	Curium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(12 950)	190	L8672c99
96	Cm LXXXV	+84	Curium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(13 350)	200	L8672c99
96	Cm LXXXVI	+85	Curium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(13 550)	220	L8672c99
96	Cm LXXXVII	+86	Curium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(27 740)	240	L8672c99
96	Cm LXXXVIII	+87	Curium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(28 180)	250	L8672c99
96	Cm LXXXIX	+88	Curium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(28 700)	300	L8672c99
96	Cm XC	+89	Curium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(29 100)	300	L8672c99
96	Cm XCI	+90	Curium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(34 600)	300	L8672c99
96	Cm XCII	+91	Curium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(35 200)	300	L8672c99
96	Cm XCIII	+92	Curium	Be	1s²2s²	¹S₀	2s ²S_1/2	(36 000)	400	L8672c99
96	Cm XCIV	+93	Curium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(36 493.0)	0.9	L16264c99
96	Cm XCV	+94	Curium	He	1s²	¹S₀	1s ²S_1/2	(143 299.6)	1.2	L10054
96	Cm XCVI	+95	Curium	H	1s	²S_¹/₂		(145 743)	4	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Bk (all spectra) 97 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
97	Bk I	0	Berkelium	Bk	[Rn]5f⁹7s²	⁶H°_¹⁵/₂	5f⁹7s ⁷H°₈	6.19785	0.00025	L15992
97	Bk II	+1	Berkelium	Cm	[Rn]5f⁹7s	⁷H°₈	5f⁹ ⁶H°_15/2	[11.9]	0.4	L13741c99
97	Bk III	+2	Berkelium	Am	[Rn]5f⁹	⁶H°_¹⁵/₂	5f⁸ ⁷F₆	[21.6]	0.4	L13741c99
97	Bk IV	+3	Berkelium	Pu	[Rn]5f⁸	⁷F₆	5f⁷ ⁸S°_7/2	[36.0]	0.4	L13741c99
97	Bk V	+4	Berkelium	Np	[Rn]5f⁷	⁸S°_⁷/₂	5f⁶ ⁷F₀	(56.0)	1.9	L8672c99
97	Bk VI	+5	Berkelium	U	[Rn]5f⁶	⁷F₀	5f⁵ ⁶H°_5/2	(70.1)	2.0	L8672c99
97	Bk VII	+6	Berkelium	Pa	[Rn]5f⁵	⁶H°_⁵/₂	5f⁴ ⁵I₄	(90.0)	2.0	L8672c99
97	Bk VIII	+7	Berkelium	Th	[Rn]5f⁴	⁵I₄	5f⁶6p³	(114)	6	L582
97	Bk IX	+8	Berkelium	Ac	[Hg]5f⁶6p³	°	5f⁶6p²	(130)	6	L582
97	Bk X	+9	Berkelium	Ra	[Hg]5f⁶6p²		5f⁵6p²°	(147)	7	L582
97	Bk XI	+10	Berkelium	Fr	[Hg]5f⁵6p²	°	5f⁴6p²	(171)	9	L582
97	Bk XII	+11	Berkelium	Rn	[Hg]5f⁴6p²		5f³6p²°	(195)	10	L582
97	Bk XIII	+12	Berkelium	At	[Hg]5f³6p²	°	5f²6p²	(218)	11	L582
97	Bk XIV	+13	Berkelium	Po	[Hg]5f²6p²		5f²6p°	(240)	12	L582
97	Bk XV	+14	Berkelium	Bi	[Hg]5f²6p	°	5f²	(259)	12	L582
97	Bk XVI	+15	Berkelium	Pb	[Hg]5f²		5f ²F°_5/2	(279)	14	L582
97	Bk XVII	+16	Berkelium	Tl	[Hg]5f	²F°_⁵/₂	6s² ¹S₀	(303)	15	L582
97	Bk XVIII	+17	Berkelium	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	(339)	3	L8672c99
97	Bk XIX	+18	Berkelium	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	(361)	3	L8672c99
97	Bk XX	+19	Berkelium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(497)	4	L8672c99
97	Bk XXI	+20	Berkelium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(526)	4	L8672c99
97	Bk XXII	+21	Berkelium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(557)	4	L8672c99
97	Bk XXIII	+22	Berkelium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(590)	4	L8672c99
97	Bk XXIV	+23	Berkelium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(621)	4	L8672c99
97	Bk XXV	+24	Berkelium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(652)	4	L8672c99
97	Bk XXVI	+25	Berkelium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(700)	4	L8672c99
97	Bk XXVII	+26	Berkelium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(733)	4	L8672c99
97	Bk XXVIII	+27	Berkelium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(768)	4	L8672c99
97	Bk XXIX	+28	Berkelium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(800)	4	L8672c99
97	Bk XXX	+29	Berkelium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	(960)	50	L582
97	Bk XXXI	+30	Berkelium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(1 000)	50	L582
97	Bk XXXII	+31	Berkelium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(1 040)	50	L582
97	Bk XXXIII	+32	Berkelium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(1 080)	50	L582
97	Bk XXXIV	+33	Berkelium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(1 200)	60	L582
97	Bk XXXV	+34	Berkelium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(1 240)	60	L582
97	Bk XXXVI	+35	Berkelium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2	(1 360)	70	L582
97	Bk XXXVII	+36	Berkelium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀	(1 410)	70	L582
97	Bk XXXVIII	+37	Berkelium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2	(1 550)	80	L582
97	Bk XXXIX	+38	Berkelium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(1 630)	80	L582
97	Bk XL	+39	Berkelium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(1 720)	90	L582
97	Bk XLI	+40	Berkelium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(1 800)	90	L582
97	Bk XLII	+41	Berkelium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(1 890)	90	L582
97	Bk XLIII	+42	Berkelium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(1 970)	100	L582
97	Bk XLIV	+43	Berkelium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(2 050)	100	L582
97	Bk XLV	+44	Berkelium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(2 140)	110	L582
97	Bk XLVI	+45	Berkelium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(2 240)	110	L582
97	Bk XLVII	+46	Berkelium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(2 320)	120	L582
97	Bk XLVIII	+47	Berkelium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(2 410)	120	L582
97	Bk XLIX	+48	Berkelium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(2 490)	120	L582
97	Bk L	+49	Berkelium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(2 580)	120	L582
97	Bk LI	+50	Berkelium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(2 670)	140	L582
97	Bk LII	+51	Berkelium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(3 080)	4	L8672c99
97	Bk LIII	+52	Berkelium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(3 154)	4	L8672c99
97	Bk LIV	+53	Berkelium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(3 232)	5	L8672c99
97	Bk LV	+54	Berkelium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(3 315)	5	L8672c99
97	Bk LVI	+55	Berkelium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(3 393)	5	L8672c99
97	Bk LVII	+56	Berkelium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(3 469)	5	L8672c99
97	Bk LVIII	+57	Berkelium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(3 630)	6	L8672c99
97	Bk LIX	+58	Berkelium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(3 709)	6	L8672c99
97	Bk LX	+59	Berkelium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(3 797)	7	L8672c99
97	Bk LXI	+60	Berkelium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(3 877)	10	L8672c99
97	Bk LXII	+61	Berkelium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(4 202)	12	L8672c99
97	Bk LXIII	+62	Berkelium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(4 281)	15	L8672c99
97	Bk LXIV	+63	Berkelium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(4 365)	19	L8672c99
97	Bk LXV	+64	Berkelium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(4 445)	24	L8672c99
97	Bk LXVI	+65	Berkelium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(4 940)	30	L8672c99
97	Bk LXVII	+66	Berkelium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(5 040)	40	L8672c99
97	Bk LXVIII	+67	Berkelium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(5 270)	40	L8672c99
97	Bk LXIX	+68	Berkelium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	(5 360)	50	L8672c99
97	Bk LXX	+69	Berkelium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(8 500)	50	L8672c99
97	Bk LXXI	+70	Berkelium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(8 670)	60	L8672c99
97	Bk LXXII	+71	Berkelium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(8 850)	60	L8672c99
97	Bk LXXIII	+72	Berkelium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(9 050)	70	L8672c99
97	Bk LXXIV	+73	Berkelium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(9 240)	90	L8672c99
97	Bk LXXV	+74	Berkelium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(9 420)	90	L8672c99
97	Bk LXXVI	+75	Berkelium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(9 880)	100	L8672c99
97	Bk LXXVII	+76	Berkelium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(10 070)	110	L8672c99
97	Bk LXXVIII	+77	Berkelium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(10 280)	120	L8672c99
97	Bk LXXIX	+78	Berkelium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(10 480)	120	L8672c99
97	Bk LXXX	+79	Berkelium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(11 020)	140	L8672c99
97	Bk LXXXI	+80	Berkelium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(11 190)	150	L8672c99
97	Bk LXXXII	+81	Berkelium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(11 380)	160	L8672c99
97	Bk LXXXIII	+82	Berkelium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(11 550)	170	L8672c99
97	Bk LXXXIV	+83	Berkelium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(13 090)	190	L8672c99
97	Bk LXXXV	+84	Berkelium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(13 300)	200	L8672c99
97	Bk LXXXVI	+85	Berkelium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(13 720)	220	L8672c99
97	Bk LXXXVII	+86	Berkelium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(13 910)	240	L8672c99
97	Bk LXXXVIII	+87	Berkelium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(28 380)	250	L8672c99
97	Bk LXXXIX	+88	Berkelium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(28 800)	300	L8672c99
97	Bk XC	+89	Berkelium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(29 300)	300	L8672c99
97	Bk XCI	+90	Berkelium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(29 800)	300	L8672c99
97	Bk XCII	+91	Berkelium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(35 500)	300	L8672c99
97	Bk XCIII	+92	Berkelium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(36 200)	400	L8672c99
97	Bk XCIV	+93	Berkelium	Be	1s²2s²	¹S₀	2s ²S_1/2	(37 000)	400	L8672c99
97	Bk XCV	+94	Berkelium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(37 457.6)	0.9	L16264c99
97	Bk XCVI	+95	Berkelium	He	1s²	¹S₀	1s ²S_1/2	(146 904.7)	1.4	L10054
97	Bk XCVII	+96	Berkelium	H	1s	²S_¹/₂		(149 398)	4	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Cf (all spectra) 98 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
98	Cf I	0	Californium	Cf	[Rn]5f¹⁰7s²	⁵I₈	5f¹⁰7s ⁶I_17/2	6.28166	0.00025	L15992
98	Cf II	+1	Californium	Bk	[Rn]5f¹⁰7s	⁶I_¹⁷/₂	5f¹⁰ ⁵I₈	[12.0]	0.4	L13741c99
98	Cf III	+2	Californium	Cm	[Rn]5f¹⁰	⁵I₈	5f⁹ ⁶H°_15/2	[22.4]	0.4	L13741c99
98	Cf IV	+3	Californium	Am	[Rn]5f⁹	⁶H°_¹⁵/₂	5f⁸ ⁷F₆	[37.7]	0.4	L13741c99
98	Cf V	+4	Californium	Pu	[Rn]5f⁸	⁷F₆	5f⁷ ⁸S°_7/2	(51.9)	1.9	L8672c99
98	Cf VI	+5	Californium	Np	[Rn]5f⁷	⁸S°_⁷/₂	5f⁶ ⁷F₀	(75.0)	2.0	L8672c99
98	Cf VII	+6	Californium	U	[Rn]5f⁶	⁷F₀	5f⁵ ⁶H°_5/2	(91.0)	2.0	L8672c99
98	Cf VIII	+7	Californium	Pa	[Rn]5f⁵	⁶H°_⁵/₂	5f⁴ ⁵I₄	(112.9)	2.1	L8672c99
98	Cf IX	+8	Californium	Th	[Rn]5f⁴	⁵I₄	5f⁷6p²	(133)	6	L582
98	Cf X	+9	Californium	Ac	[Hg]5f⁷6p²	°	5f⁶6p²	(152)	7	L582
98	Cf XI	+10	Californium	Ra	[Hg]5f⁶6p²		5f⁵6p²°	(178)	9	L582
98	Cf XII	+11	Californium	Fr	[Hg]5f⁵6p²	°	5f⁴6p²	(201)	10	L582
98	Cf XIII	+12	Californium	Rn	[Hg]5f⁴6p²		5f³6p²°	(225)	11	L582
98	Cf XIV	+13	Californium	At	[Hg]5f³6p²	°	5f³6p	(247)	12	L582
98	Cf XV	+14	Californium	Po	[Hg]5f³6p		5f³°	(265)	14	L582
98	Cf XVI	+15	Californium	Bi	[Hg]5f³	°	5f²	(286)	15	L582
98	Cf XVII	+16	Californium	Pb	[Hg]5f²		5f ²F°_5/2	(310)	15	L582
98	Cf XVIII	+17	Californium	Tl	[Hg]5f	²F°_⁵/₂	6s² ¹S₀	(334)	16	L582
98	Cf XIX	+18	Californium	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	(368)	3	L8672c99
98	Cf XX	+19	Californium	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	(390)	4	L8672c99
98	Cf XXI	+20	Californium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(536)	4	L8672c99
98	Cf XXII	+21	Californium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(566)	4	L8672c99
98	Cf XXIII	+22	Californium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(597)	4	L8672c99
98	Cf XXIV	+23	Californium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(630)	4	L8672c99
98	Cf XXV	+24	Californium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(662)	4	L8672c99
98	Cf XXVI	+25	Californium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(695)	4	L8672c99
98	Cf XXVII	+26	Californium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(744)	4	L8672c99
98	Cf XXVIII	+27	Californium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(778)	4	L8672c99
98	Cf XXIX	+28	Californium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(814)	4	L8672c99
98	Cf XXX	+29	Californium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(847)	4	L8672c99
98	Cf XXXI	+30	Californium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	(1 010)	50	L582
98	Cf XXXII	+31	Californium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(1 050)	50	L582
98	Cf XXXIII	+32	Californium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(1 090)	50	L582
98	Cf XXXIV	+33	Californium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(1 120)	60	L582
98	Cf XXXV	+34	Californium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(1 250)	60	L582
98	Cf XXXVI	+35	Californium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(1 300)	60	L582
98	Cf XXXVII	+36	Californium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2	(1 420)	70	L582
98	Cf XXXVIII	+37	Californium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀	(1 470)	70	L582
98	Cf XXXIX	+38	Californium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2	(1 620)	80	L582
98	Cf XL	+39	Californium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(1 700)	90	L582
98	Cf XLI	+40	Californium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(1 790)	90	L582
98	Cf XLII	+41	Californium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(1 880)	100	L582
98	Cf XLIII	+42	Californium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(1 960)	100	L582
98	Cf XLIV	+43	Californium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(2 050)	100	L582
98	Cf XLV	+44	Californium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(2 130)	110	L582
98	Cf XLVI	+45	Californium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(2 220)	110	L582
98	Cf XLVII	+46	Californium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(2 320)	120	L582
98	Cf XLVIII	+47	Californium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(2 410)	120	L582
98	Cf XLIX	+48	Californium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(2 490)	120	L582
98	Cf L	+49	Californium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(2 580)	120	L582
98	Cf LI	+50	Californium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(2 670)	140	L582
98	Cf LII	+51	Californium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(2 750)	140	L582
98	Cf LIII	+52	Californium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(3 186)	4	L8672c99
98	Cf LIV	+53	Californium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(3 261)	5	L8672c99
98	Cf LV	+54	Californium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(3 340)	5	L8672c99
98	Cf LVI	+55	Californium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(3 424)	5	L8672c99
98	Cf LVII	+56	Californium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(3 503)	5	L8672c99
98	Cf LVIII	+57	Californium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(3 581)	6	L8672c99
98	Cf LIX	+58	Californium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(3 747)	6	L8672c99
98	Cf LX	+59	Californium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(3 828)	7	L8672c99
98	Cf LXI	+60	Californium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(3 915)	10	L8672c99
98	Cf LXII	+61	Californium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(3 998)	12	L8672c99
98	Cf LXIII	+62	Californium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(4 329)	15	L8672c99
98	Cf LXIV	+63	Californium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(4 407)	19	L8672c99
98	Cf LXV	+64	Californium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(4 494)	24	L8672c99
98	Cf LXVI	+65	Californium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(4 570)	30	L8672c99
98	Cf LXVII	+66	Californium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(5 100)	40	L8672c99
98	Cf LXVIII	+67	Californium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(5 190)	40	L8672c99
98	Cf LXIX	+68	Californium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(5 430)	50	L8672c99
98	Cf LXX	+69	Californium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	(5 520)	50	L8672c99
98	Cf LXXI	+70	Californium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(8 730)	60	L8672c99
98	Cf LXXII	+71	Californium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(8 900)	60	L8672c99
98	Cf LXXIII	+72	Californium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(9 090)	70	L8672c99
98	Cf LXXIV	+73	Californium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(9 290)	90	L8672c99
98	Cf LXXV	+74	Californium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(9 480)	90	L8672c99
98	Cf LXXVI	+75	Californium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(9 660)	100	L8672c99
98	Cf LXXVII	+76	Californium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(10 140)	110	L8672c99
98	Cf LXXVIII	+77	Californium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(10 330)	120	L8672c99
98	Cf LXXIX	+78	Californium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(10 550)	120	L8672c99
98	Cf LXXX	+79	Californium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(10 740)	140	L8672c99
98	Cf LXXXI	+80	Californium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(11 300)	150	L8672c99
98	Cf LXXXII	+81	Californium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(11 470)	160	L8672c99
98	Cf LXXXIII	+82	Californium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(11 650)	170	L8672c99
98	Cf LXXXIV	+83	Californium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(11 820)	190	L8672c99
98	Cf LXXXV	+84	Californium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(13 450)	200	L8672c99
98	Cf LXXXVI	+85	Californium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(13 660)	220	L8672c99
98	Cf LXXXVII	+86	Californium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(14 080)	240	L8672c99
98	Cf LXXXVIII	+87	Californium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(14 280)	250	L8672c99
98	Cf LXXXIX	+88	Californium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(29 000)	300	L8672c99
98	Cf XC	+89	Californium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(29 500)	300	L8672c99
98	Cf XCI	+90	Californium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(30 000)	300	L8672c99
98	Cf XCII	+91	Californium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(30 500)	300	L8672c99
98	Cf XCIII	+92	Californium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(36 500)	400	L8672c99
98	Cf XCIV	+93	Californium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(37 100)	400	L8672c99
98	Cf XCV	+94	Californium	Be	1s²2s²	¹S₀	2s ²S_1/2	(37 900)	400	L8672c99
98	Cf XCVI	+95	Californium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(38 443.5)	1.0	L16264c99
98	Cf XCVII	+96	Californium	He	1s²	¹S₀	1s ²S_1/2	(150 579.3)	1.4	L10054
98	Cf XCVIII	+97	Californium	H	1s	²S_¹/₂		(153 124)	5	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Es (all spectra) 99 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
99	Es I	0	Einsteinium	Es	[Rn]5f¹¹7s²	⁴I°_¹⁵/₂	5f¹¹7s ⁵I°₈	6.36758	0.00025	L7765
99	Es II	+1	Einsteinium	Cf	[Rn]5f¹¹7s	⁵I°₈	5f¹¹ ⁴I°_15/2	[12.2]	0.4	L13741c99
99	Es III	+2	Einsteinium	Bk	[Rn]5f¹¹	⁴I°_¹⁵/₂	5f¹⁰ ⁵I₈	[22.7]	0.4	L13741c99
99	Es IV	+3	Einsteinium	Cm	[Rn]5f¹⁰	⁵I₈	5f⁹ ⁶H°_15/2	[38.8]	0.4	L13741c99
99	Es V	+4	Einsteinium	Am	[Rn]5f⁹	⁶H°_¹⁵/₂	5f⁸ ⁷F₆	(54.1)	1.9	L8672c99
99	Es VI	+5	Einsteinium	Pu	[Rn]5f⁸	⁷F₆	5f⁷ ⁸S°_7/2	(71.0)	2.0	L8672c99
99	Es VII	+6	Einsteinium	Np	[Rn]5f⁷	⁸S°_⁷/₂	5f⁶ ⁷F₀	(97.0)	2.0	L8672c99
99	Es VIII	+7	Einsteinium	U	[Rn]5f⁶	⁷F₀	5f⁵ ⁶H°_5/2	(112.9)	2.1	L8672c99
99	Es IX	+8	Einsteinium	Pa	[Rn]5f⁵	⁶H°_⁵/₂	5f⁴ ⁵I₄	(137.0)	2.2	L8672c99
99	Es X	+9	Einsteinium	Th	[Rn]5f⁴	⁵I₄	5f⁷6p²	(157)	7	L582
99	Es XI	+10	Einsteinium	Ac	[Hg]5f⁷6p²	°	5f⁶6p²	(180)	9	L582
99	Es XII	+11	Einsteinium	Ra	[Hg]5f⁶6p²		5f⁵6p²°	(206)	10	L582
99	Es XIII	+12	Einsteinium	Fr	[Hg]5f⁵6p²	°	5f⁴6p²	(231)	11	L582
99	Es XIV	+13	Einsteinium	Rn	[Hg]5f⁴6p²		5f⁴6p°	(252)	12	L582
99	Es XV	+14	Einsteinium	At	[Hg]5f⁴6p	°	5f⁴	(270)	14	L582
99	Es XVI	+15	Einsteinium	Po	[Hg]5f⁴		5f³°	(294)	15	L582
99	Es XVII	+16	Einsteinium	Bi	[Hg]5f³	°	5f²	(317)	16	L582
99	Es XVIII	+17	Einsteinium	Pb	[Hg]5f²		5f ²F°_5/2	(342)	17	L582
99	Es XIX	+18	Einsteinium	Tl	[Hg]5f	²F°_⁵/₂	6s² ¹S₀	(367)	19	L582
99	Es XX	+19	Einsteinium	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	(398)	4	L8672c99
99	Es XXI	+20	Einsteinium	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	(421)	4	L8672c99
99	Es XXII	+21	Einsteinium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(576)	4	L8672c99
99	Es XXIII	+22	Einsteinium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(606)	4	L8672c99
99	Es XXIV	+23	Einsteinium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(638)	4	L8672c99
99	Es XXV	+24	Einsteinium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(672)	4	L8672c99
99	Es XXVI	+25	Einsteinium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(705)	4	L8672c99
99	Es XXVII	+26	Einsteinium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(738)	4	L8672c99
99	Es XXVIII	+27	Einsteinium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(790)	4	L8672c99
99	Es XXIX	+28	Einsteinium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(824)	4	L8672c99
99	Es XXX	+29	Einsteinium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(861)	4	L8672c99
99	Es XXXI	+30	Einsteinium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(895)	4	L8672c99
99	Es XXXII	+31	Einsteinium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	(1 060)	50	L582
99	Es XXXIII	+32	Einsteinium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(1 100)	50	L582
99	Es XXXIV	+33	Einsteinium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(1 140)	60	L582
99	Es XXXV	+34	Einsteinium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(1 180)	60	L582
99	Es XXXVI	+35	Einsteinium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(1 310)	70	L582
99	Es XXXVII	+36	Einsteinium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(1 360)	70	L582
99	Es XXXVIII	+37	Einsteinium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2	(1 480)	70	L582
99	Es XXXIX	+38	Einsteinium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀	(1 530)	80	L582
99	Es XL	+39	Einsteinium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2	(1 690)	80	L582
99	Es XLI	+40	Einsteinium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(1 780)	90	L582
99	Es XLII	+41	Einsteinium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(1 870)	90	L582
99	Es XLIII	+42	Einsteinium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(1 950)	100	L582
99	Es XLIV	+43	Einsteinium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(2 040)	100	L582
99	Es XLV	+44	Einsteinium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(2 130)	110	L582
99	Es XLVI	+45	Einsteinium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(2 220)	110	L582
99	Es XLVII	+46	Einsteinium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(2 300)	120	L582
99	Es XLVIII	+47	Einsteinium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(2 410)	120	L582
99	Es XLIX	+48	Einsteinium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(2 490)	120	L582
99	Es L	+49	Einsteinium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(2 580)	120	L582
99	Es LI	+50	Einsteinium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(2 680)	140	L582
99	Es LII	+51	Einsteinium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(2 760)	140	L582
99	Es LIII	+52	Einsteinium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(2 850)	140	L582
99	Es LIV	+53	Einsteinium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(3 294)	5	L8672c99
99	Es LV	+54	Einsteinium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(3 370)	5	L8672c99
99	Es LVI	+55	Einsteinium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(3 449)	5	L8672c99
99	Es LVII	+56	Einsteinium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(3 535)	5	L8672c99
99	Es LVIII	+57	Einsteinium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(3 616)	6	L8672c99
99	Es LIX	+58	Einsteinium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(3 694)	6	L8672c99
99	Es LX	+59	Einsteinium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(3 866)	7	L8672c99
99	Es LXI	+60	Einsteinium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(3 947)	10	L8672c99
99	Es LXII	+61	Einsteinium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(4 038)	12	L8672c99
99	Es LXIII	+62	Einsteinium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(4 120)	15	L8672c99
99	Es LXIV	+63	Einsteinium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(4 456)	19	L8672c99
99	Es LXV	+64	Einsteinium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(4 537)	24	L8672c99
99	Es LXVI	+65	Einsteinium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(4 620)	30	L8672c99
99	Es LXVII	+66	Einsteinium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(4 700)	40	L8672c99
99	Es LXVIII	+67	Einsteinium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(5 260)	40	L8672c99
99	Es LXIX	+68	Einsteinium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(5 350)	50	L8672c99
99	Es LXX	+69	Einsteinium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(5 600)	50	L8672c99
99	Es LXXI	+70	Einsteinium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	(5 690)	60	L8672c99
99	Es LXXII	+71	Einsteinium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(8 960)	60	L8672c99
99	Es LXXIII	+72	Einsteinium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(9 140)	70	L8672c99
99	Es LXXIV	+73	Einsteinium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(9 330)	90	L8672c99
99	Es LXXV	+74	Einsteinium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(9 530)	90	L8672c99
99	Es LXXVI	+75	Einsteinium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(9 720)	100	L8672c99
99	Es LXXVII	+76	Einsteinium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(9 910)	110	L8672c99
99	Es LXXVIII	+77	Einsteinium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(10 400)	120	L8672c99
99	Es LXXIX	+78	Einsteinium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(10 590)	120	L8672c99
99	Es LXXX	+79	Einsteinium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(10 810)	140	L8672c99
99	Es LXXXI	+80	Einsteinium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(11 010)	150	L8672c99
99	Es LXXXII	+81	Einsteinium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(11 570)	160	L8672c99
99	Es LXXXIII	+82	Einsteinium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(11 740)	170	L8672c99
99	Es LXXXIV	+83	Einsteinium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(11 930)	190	L8672c99
99	Es LXXXV	+84	Einsteinium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(12 110)	200	L8672c99
99	Es LXXXVI	+85	Einsteinium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(13 810)	220	L8672c99
99	Es LXXXVII	+86	Einsteinium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(14 030)	240	L8672c99
99	Es LXXXVIII	+87	Einsteinium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(14 460)	250	L8672c99
99	Es LXXXIX	+88	Einsteinium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(14 700)	300	L8672c99
99	Es XC	+89	Einsteinium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(29 700)	300	L8672c99
99	Es XCI	+90	Einsteinium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(30 100)	300	L8672c99
99	Es XCII	+91	Einsteinium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(30 700)	300	L8672c99
99	Es XCIII	+92	Einsteinium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(31 100)	400	L8672c99
99	Es XCIV	+93	Einsteinium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(37 400)	400	L8672c99
99	Es XCV	+94	Einsteinium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(38 100)	400	L8672c99
99	Es XCVI	+95	Einsteinium	Be	1s²2s²	¹S₀	2s ²S_1/2	(38 900)	400	L8672c99
99	Es XCVII	+96	Einsteinium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(39 451.4)	1.0	L16264c99
99	Es XCVIII	+97	Einsteinium	He	1s²	¹S₀	1s ²S_1/2	(154 328.1)	1.5	L10054
99	Es XCIX	+98	Einsteinium	H	1s	²S_¹/₂		(156 926)	5	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Fm (all spectra) 100 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy (eV)	Uncertainty (eV)	References
100	Fm I	0	Fermium	Fm	[Rn]5f¹²7s²	³H₆	5f¹²7s ⁴H_13/2	[6.50]	0.07	L16359
100	Fm II	+1	Fermium	Es	[Rn]5f¹²7s	⁴H_¹³/₂	5f¹² ³H₆	[12.4]	0.4	L13741c99
100	Fm III	+2	Fermium	Cf	[Rn]5f¹²	³H₆	5f¹¹ ⁴I°_15/2	[23.2]	0.4	L13741c99
100	Fm IV	+3	Fermium	Bk	[Rn]5f¹¹	⁴I°_¹⁵/₂	5f¹⁰ ⁵I₈	[39.3]	0.4	L13741c99
100	Fm V	+4	Fermium	Cm	[Rn]5f¹⁰	⁵I₈	5f⁹ ⁶H°_15/2	(55.0)	1.9	L8672c99
100	Fm VI	+5	Fermium	Am	[Rn]5f⁹	⁶H°_¹⁵/₂	5f⁸ ⁷F₆	(74.0)	2.0	L8672c99
100	Fm VII	+6	Fermium	Pu	[Rn]5f⁸	⁷F₆	5f⁷ ⁸S°_7/2	(93.0)	2.0	L8672c99
100	Fm VIII	+7	Fermium	Np	[Rn]5f⁷	⁸S°_⁷/₂	5f⁶ ⁷F₀	(120.0)	2.1	L8672c99
100	Fm IX	+8	Fermium	U	[Rn]5f⁶	⁷F₀	5f⁵ ⁶H°_5/2	(136.0)	2.2	L8672c99
100	Fm X	+9	Fermium	Pa	[Rn]5f⁵	⁶H°_⁵/₂	5f⁴ ⁵I₄	(162.0)	2.2	L8672c99
100	Fm XI	+10	Fermium	Th	[Rn]5f⁴	⁵I₄	5f⁷6p²	(185)	9	L582
100	Fm XII	+11	Fermium	Ac	[Hg]5f⁷6p²	°	5f⁶6p²	(209)	10	L582
100	Fm XIII	+12	Fermium	Ra	[Hg]5f⁶6p²		5f⁵6p²°	(237)	12	L582
100	Fm XIV	+13	Fermium	Fr	[Hg]5f⁵6p²	°	5f⁵6p	(257)	12	L582
100	Fm XV	+14	Fermium	Rn	[Hg]5f⁵6p		5f⁵°	(276)	14	L582
100	Fm XVI	+15	Fermium	At	[Hg]5f⁵	°	5f⁴	(300)	15	L582
100	Fm XVII	+16	Fermium	Po	[Hg]5f⁴		5f³°	(326)	16	L582
100	Fm XVIII	+17	Fermium	Bi	[Hg]5f³	°	5f²	(351)	17	L582
100	Fm XIX	+18	Fermium	Pb	[Hg]5f²		5f ²F°_5/2	(377)	19	L582
100	Fm XX	+19	Fermium	Tl	[Hg]5f	²F°_⁵/₂	6s² ¹S₀	(402)	20	L582
100	Fm XXI	+20	Fermium	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	(430)	4	L8672c99
100	Fm XXII	+21	Fermium	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	(453)	4	L8672c99
100	Fm XXIII	+22	Fermium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(616)	4	L8672c99
100	Fm XXIV	+23	Fermium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(647)	4	L8672c99
100	Fm XXV	+24	Fermium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(680)	4	L8672c99
100	Fm XXVI	+25	Fermium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(716)	4	L8672c99
100	Fm XXVII	+26	Fermium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(749)	4	L8672c99
100	Fm XXVIII	+27	Fermium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(782)	4	L8672c99
100	Fm XXIX	+28	Fermium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(837)	4	L8672c99
100	Fm XXX	+29	Fermium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(871)	4	L8672c99
100	Fm XXXI	+30	Fermium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(909)	4	L8672c99
100	Fm XXXII	+31	Fermium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(944)	4	L8672c99
100	Fm XXXIII	+32	Fermium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	(1 110)	50	L582
100	Fm XXXIV	+33	Fermium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(1 150)	60	L582
100	Fm XXXV	+34	Fermium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(1 190)	60	L582
100	Fm XXXVI	+35	Fermium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(1 230)	60	L582
100	Fm XXXVII	+36	Fermium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(1 370)	70	L582
100	Fm XXXVIII	+37	Fermium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(1 420)	70	L582
100	Fm XXXIX	+38	Fermium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2	(1 550)	80	L582
100	Fm XL	+39	Fermium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀	(1 600)	80	L582
100	Fm XLI	+40	Fermium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2	(1 770)	90	L582
100	Fm XLII	+41	Fermium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(1 850)	90	L582
100	Fm XLIII	+42	Fermium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(1 940)	100	L582
100	Fm XLIV	+43	Fermium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(2 030)	100	L582
100	Fm XLV	+44	Fermium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(2 120)	110	L582
100	Fm XLVI	+45	Fermium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(2 210)	110	L582
100	Fm XLVII	+46	Fermium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(2 300)	120	L582
100	Fm XLVIII	+47	Fermium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(2 390)	120	L582
100	Fm XLIX	+48	Fermium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(2 490)	120	L582
100	Fm L	+49	Fermium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(2 590)	120	L582
100	Fm LI	+50	Fermium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(2 680)	140	L582
100	Fm LII	+51	Fermium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(2 760)	140	L582
100	Fm LIII	+52	Fermium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(2 850)	150	L582
100	Fm LIV	+53	Fermium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(2 950)	150	L582
100	Fm LV	+54	Fermium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(3 403)	5	L8672c99
100	Fm LVI	+55	Fermium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(3 480)	5	L8672c99
100	Fm LVII	+56	Fermium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(3 561)	5	L8672c99
100	Fm LVIII	+57	Fermium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(3 647)	6	L8672c99
100	Fm LIX	+58	Fermium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(3 730)	6	L8672c99
100	Fm LX	+59	Fermium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(3 810)	7	L8672c99
100	Fm LXI	+60	Fermium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(3 986)	10	L8672c99
100	Fm LXII	+61	Fermium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(4 070)	12	L8672c99
100	Fm LXIII	+62	Fermium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(4 160)	15	L8672c99
100	Fm LXIV	+63	Fermium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(4 245)	19	L8672c99
100	Fm LXV	+64	Fermium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(4 586)	24	L8672c99
100	Fm LXVI	+65	Fermium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(4 670)	30	L8672c99
100	Fm LXVII	+66	Fermium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(4 760)	40	L8672c99
100	Fm LXVIII	+67	Fermium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(4 840)	40	L8672c99
100	Fm LXIX	+68	Fermium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(5 420)	50	L8672c99
100	Fm LXX	+69	Fermium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(5 510)	50	L8672c99
100	Fm LXXI	+70	Fermium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(5 760)	60	L8672c99
100	Fm LXXII	+71	Fermium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	(5 860)	60	L8672c99
100	Fm LXXIII	+72	Fermium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(9 200)	70	L8672c99
100	Fm LXXIV	+73	Fermium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(9 370)	90	L8672c99
100	Fm LXXV	+74	Fermium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(9 570)	90	L8672c99
100	Fm LXXVI	+75	Fermium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(9 770)	100	L8672c99
100	Fm LXXVII	+76	Fermium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(9 970)	110	L8672c99
100	Fm LXXVIII	+77	Fermium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(10 160)	120	L8672c99
100	Fm LXXIX	+78	Fermium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(10 660)	120	L8672c99
100	Fm LXXX	+79	Fermium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(10 860)	140	L8672c99
100	Fm LXXXI	+80	Fermium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(11 080)	150	L8672c99
100	Fm LXXXII	+81	Fermium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(11 280)	160	L8672c99
100	Fm LXXXIII	+82	Fermium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(11 850)	170	L8672c99
100	Fm LXXXIV	+83	Fermium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(12 020)	190	L8672c99
100	Fm LXXXV	+84	Fermium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(12 220)	200	L8672c99
100	Fm LXXXVI	+85	Fermium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(12 390)	220	L8672c99
100	Fm LXXXVII	+86	Fermium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(14 180)	240	L8672c99
100	Fm LXXXVIII	+87	Fermium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(14 400)	250	L8672c99
100	Fm LXXXIX	+88	Fermium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(14 800)	300	L8672c99
100	Fm XC	+89	Fermium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(15 000)	300	L8672c99
100	Fm XCI	+90	Fermium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(30 300)	300	L8672c99
100	Fm XCII	+91	Fermium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(30 800)	300	L8672c99
100	Fm XCIII	+92	Fermium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(31 300)	400	L8672c99
100	Fm XCIV	+93	Fermium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(31 800)	400	L8672c99
100	Fm XCV	+94	Fermium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(38 400)	400	L8672c99
100	Fm XCVI	+95	Fermium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(39 100)	400	L8672c99
100	Fm XCVII	+96	Fermium	Be	1s²2s²	¹S₀	2s ²S_1/2	(40 000)	400	L8672c99
100	Fm XCVIII	+97	Fermium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(40 482.2)	1.1	L16264c99
100	Fm XCIX	+98	Fermium	He	1s²	¹S₀	1s ²S_1/2	(158 152.5)	1.5	L10054
100	Fm C	+99	Fermium	H	1s	²S_¹/₂		(160 804)	6	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Md (all spectra) 101 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy ^b (eV)	Uncertainty^c (eV)	References
101	Md I	0	Mendelevium	Md	[Rn]5f¹³7s²	²F°_⁷/₂	5f¹³7s ³F°₄	[6.58]	0.07	L16359
101	Md II	+1	Mendelevium	Fm	[Rn]5f¹³7s	³F°₄	5f¹³ ²F°_7/2	[12.4]	0.4	L13741c99
101	Md III	+2	Mendelevium	Es	[Rn]5f¹³	²F°_⁷/₂	5f¹² ³H₆	[24.3]	0.4	L13741c99
101	Md IV	+3	Mendelevium	Cf	[Rn]5f¹²	³H₆	5f¹¹ ⁴I°_15/2	[40.0]	0.4	L13741c99
101	Md V	+4	Mendelevium	Bk	[Rn]5f¹¹	⁴I°_¹⁵/₂	5f¹⁰ ⁵I₈	(54.1)	1.9	L8672c99
101	Md VI	+5	Mendelevium	Cm	[Rn]5f¹⁰	⁵I₈	5f⁹ ⁶H°_15/2	(76.0)	2.0	L8672c99
101	Md VII	+6	Mendelevium	Am	[Rn]5f⁹	⁶H°_¹⁵/₂	5f⁸ ⁷F₆	(96.0)	2.0	L8672c99
101	Md VIII	+7	Mendelevium	Pu	[Rn]5f⁸	⁷F₆	5f⁷ ⁸S°_7/2	(115.1)	2.1	L8672c99
101	Md IX	+8	Mendelevium	Np	[Rn]5f⁷	⁸S°_⁷/₂	5f⁶ ⁷F₀	(143.9)	2.2	L8672c99
101	Md X	+9	Mendelevium	U	[Rn]5f⁶	⁷F₀	5f⁵ ⁶H°_5/2	(162.0)	2.2	L8672c99
101	Md XI	+10	Mendelevium	Pa	[Rn]5f⁵	⁶H°_⁵/₂	5f⁴ ⁵I₄	(187.0)	2.4	L8672c99
101	Md XII	+11	Mendelevium	Th	[Rn]5f⁴	⁵I₄	5f⁷6p²	(215)	11	L582
101	Md XIII	+12	Mendelevium	Ac	[Hg]5f⁷6p²	°	5f⁶6p²	(240)	12	L582
101	Md XIV	+13	Mendelevium	Ra	[Hg]5f⁶6p²		5f⁶6p°	(260)	12	L582
101	Md XV	+14	Mendelevium	Fr	[Hg]5f⁶6p	°	5f⁶	(282)	14	L582
101	Md XVI	+15	Mendelevium	Rn	[Hg]5f⁶		5f⁵°	(307)	15	L582
101	Md XVII	+16	Mendelevium	At	[Hg]5f⁵	°	5f⁴	(334)	16	L582
101	Md XVIII	+17	Mendelevium	Po	[Hg]5f⁴		5f³°	(360)	17	L582
101	Md XIX	+18	Mendelevium	Bi	[Hg]5f³	°	5f²	(386)	20	L582
101	Md XX	+19	Mendelevium	Pb	[Hg]5f²		5f ²F°_5/2	(412)	21	L582
101	Md XXI	+20	Mendelevium	Tl	[Hg]5f	²F°_⁵/₂	6s² ¹S₀	(438)	22	L582
101	Md XXII	+21	Mendelevium	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	(462)	4	L8672c99
101	Md XXIII	+22	Mendelevium	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	(486)	4	L8672c99
101	Md XXIV	+23	Mendelevium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(659)	4	L8672c99
101	Md XXV	+24	Mendelevium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(690)	4	L8672c99
101	Md XXVI	+25	Mendelevium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(723)	4	L8672c99
101	Md XXVII	+26	Mendelevium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(760)	4	L8672c99
101	Md XXVIII	+27	Mendelevium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(794)	4	L8672c99
101	Md XXIX	+28	Mendelevium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(828)	4	L8672c99
101	Md XXX	+29	Mendelevium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(885)	4	L8672c99
101	Md XXXI	+30	Mendelevium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(920)	4	L8672c99
101	Md XXXII	+31	Mendelevium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(958)	4	L8672c99
101	Md XXXIII	+32	Mendelevium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(994)	4	L8672c99
101	Md XXXIV	+33	Mendelevium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	(1 160)	60	L582
101	Md XXXV	+34	Mendelevium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(1 210)	60	L582
101	Md XXXVI	+35	Mendelevium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(1 250)	60	L582
101	Md XXXVII	+36	Mendelevium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(1 290)	60	L582
101	Md XXXVIII	+37	Mendelevium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(1 430)	70	L582
101	Md XXXIX	+38	Mendelevium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(1 480)	70	L582
101	Md XL	+39	Mendelevium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2	(1 620)	80	L582
101	Md XLI	+40	Mendelevium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀	(1 660)	80	L582
101	Md XLII	+41	Mendelevium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2	(1 840)	90	L582
101	Md XLIII	+42	Mendelevium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(1 930)	100	L582
101	Md XLIV	+43	Mendelevium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(2 020)	100	L582
101	Md XLV	+44	Mendelevium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(2 110)	110	L582
101	Md XLVI	+45	Mendelevium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(2 200)	110	L582
101	Md XLVII	+46	Mendelevium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(2 290)	120	L582
101	Md XLVIII	+47	Mendelevium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(2 390)	120	L582
101	Md XLIX	+48	Mendelevium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(2 480)	120	L582
101	Md L	+49	Mendelevium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(2 580)	120	L582
101	Md LI	+50	Mendelevium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(2 680)	140	L582
101	Md LII	+51	Mendelevium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(2 760)	140	L582
101	Md LIII	+52	Mendelevium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(2 860)	150	L582
101	Md LIV	+53	Mendelevium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(2 950)	150	L582
101	Md LV	+54	Mendelevium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(3 050)	150	L582
101	Md LVI	+55	Mendelevium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(3 513)	5	L8672c99
101	Md LVII	+56	Mendelevium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(3 592)	5	L8672c99
101	Md LVIII	+57	Mendelevium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(3 675)	6	L8672c99
101	Md LIX	+58	Mendelevium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(3 762)	6	L8672c99
101	Md LX	+59	Mendelevium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(3 845)	7	L8672c99
101	Md LXI	+60	Mendelevium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(3 926)	10	L8672c99
101	Md LXII	+61	Mendelevium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(4 109)	12	L8672c99
101	Md LXIII	+62	Mendelevium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(4 194)	15	L8672c99
101	Md LXIV	+63	Mendelevium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(4 286)	19	L8672c99
101	Md LXV	+64	Mendelevium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(4 371)	24	L8672c99
101	Md LXVI	+65	Mendelevium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(4 720)	30	L8672c99
101	Md LXVII	+66	Mendelevium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(4 800)	40	L8672c99
101	Md LXVIII	+67	Mendelevium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(4 890)	40	L8672c99
101	Md LXIX	+68	Mendelevium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(4 970)	50	L8672c99
101	Md LXX	+69	Mendelevium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(5 580)	50	L8672c99
101	Md LXXI	+70	Mendelevium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(5 680)	60	L8672c99
101	Md LXXII	+71	Mendelevium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(5 930)	60	L8672c99
101	Md LXXIII	+72	Mendelevium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	(6 030)	70	L8672c99
101	Md LXXIV	+73	Mendelevium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(9 430)	90	L8672c99
101	Md LXXV	+74	Mendelevium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(9 620)	90	L8672c99
101	Md LXXVI	+75	Mendelevium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(9 810)	100	L8672c99
101	Md LXXVII	+76	Mendelevium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(10 020)	110	L8672c99
101	Md LXXVIII	+77	Mendelevium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(10 220)	120	L8672c99
101	Md LXXIX	+78	Mendelevium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(10 410)	120	L8672c99
101	Md LXXX	+79	Mendelevium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(10 930)	140	L8672c99
101	Md LXXXI	+80	Mendelevium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(11 130)	150	L8672c99
101	Md LXXXII	+81	Mendelevium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(11 350)	160	L8672c99
101	Md LXXXIII	+82	Mendelevium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(11 560)	170	L8672c99
101	Md LXXXIV	+83	Mendelevium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(12 130)	190	L8672c99
101	Md LXXXV	+84	Mendelevium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(12 310)	200	L8672c99
101	Md LXXXVI	+85	Mendelevium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(12 500)	220	L8672c99
101	Md LXXXVII	+86	Mendelevium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(12 680)	240	L8672c99
101	Md LXXXVIII	+87	Mendelevium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(14 560)	250	L8672c99
101	Md LXXXIX	+88	Mendelevium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(14 800)	300	L8672c99
101	Md XC	+89	Mendelevium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(15 200)	300	L8672c99
101	Md XCI	+90	Mendelevium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(15 400)	300	L8672c99
101	Md XCII	+91	Mendelevium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(31 000)	300	L8672c99
101	Md XCIII	+92	Mendelevium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(31 500)	400	L8672c99
101	Md XCIV	+93	Mendelevium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(32 000)	400	L8672c99
101	Md XCV	+94	Mendelevium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(32 500)	400	L8672c99
101	Md XCVI	+95	Mendelevium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(39 500)	400	L8672c99
101	Md XCVII	+96	Mendelevium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(40 100)	400	L8672c99
101	Md XCVIII	+97	Mendelevium	Be	1s²2s²	¹S₀	2s ²S_1/2	(41 000)	400	L8672c99
101	Md XCIX	+98	Mendelevium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(41 548)	6	L582c106
101	Md C	+99	Mendelevium	He	1s²	¹S₀	1s ²S_1/2
101	Md CI	+100	Mendelevium	H	1s	²S_¹/₂		(164 764)	6	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data No (all spectra) 102 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy ^b (eV)	Uncertainty^c (eV)	References
102	No I	0	Nobelium	No	[Rn]5f¹⁴7s²	¹S₀	5f¹⁴7s ²S_1/2	(6.66)	0.04	L19691
102	No II	+1	Nobelium	Md	[Rn]5f¹⁴7s	²S_¹/₂	5f¹⁴ ¹S₀	(12.93)	0.04	L19691
102	No III	+2	Nobelium	Fm	[Rn]5f¹⁴	¹S₀	5f¹³ ²F°_7/2	[25.8]	0.4	L13741c99
102	No IV	+3	Nobelium	Es	[Rn]5f¹³	²F°_⁷/₂	5f¹² ³H₆	[41.5]	0.4	L13741c99
102	No V	+4	Nobelium	Cf	[Rn]5f¹²	³H₆	5f¹¹ ⁴I°_15/2	(60.0)	1.9	L8672c99
102	No VI	+5	Nobelium	Bk	[Rn]5f¹¹	⁴I°_¹⁵/₂	5f¹⁰ ⁵I₈	(74.0)	2.0	L8672c99
102	No VII	+6	Nobelium	Cm	[Rn]5f¹⁰	⁵I₈	5f⁹ ⁶H°_15/2	(97.0)	2.0	L8672c99
102	No VIII	+7	Nobelium	Am	[Rn]5f⁹	⁶H°_¹⁵/₂	5f⁸ ⁷F₆	(119.0)	2.1	L8672c99
102	No IX	+8	Nobelium	Pu	[Rn]5f⁸	⁷F₆	5f⁷ ⁸S°_7/2	(140.0)	2.2	L8672c99
102	No X	+9	Nobelium	Np	[Rn]5f⁷	⁸S°_⁷/₂	5f⁶ ⁷F₀	(170.0)	2.2	L8672c99
102	No XI	+10	Nobelium	U	[Rn]5f⁶	⁷F₀	5f⁵ ⁶H°_5/2	(187.0)	2.4	L8672c99
102	No XII	+11	Nobelium	Pa	[Rn]5f⁵	⁶H°_⁵/₂	5f⁴ ⁵I₄	(216.0)	2.5	L8672c99
102	No XIII	+12	Nobelium	Th	[Rn]5f⁴	⁵I₄	5f⁷6p²	(246)	12	L582
102	No XIV	+13	Nobelium	Ac	[Hg]5f⁷6p²	°	5f⁷6p	(267)	14	L582
102	No XV	+14	Nobelium	Ra	[Hg]5f⁷6p		5f⁷°	(285)	12	L582
102	No XVI	+15	Nobelium	Fr	[Hg]5f⁷	°	5f⁶	(312)	16	L582
102	No XVII	+16	Nobelium	Rn	[Hg]5f⁶		5f⁵°	(341)	17	L582
102	No XVIII	+17	Nobelium	At	[Hg]5f⁵	°	5f⁴	(367)	19	L582
102	No XIX	+18	Nobelium	Po	[Hg]5f⁴		5f³°	(394)	20	L582
102	No XX	+19	Nobelium	Bi	[Hg]5f³	°	5f²	(422)	21	L582
102	No XXI	+20	Nobelium	Pb	[Hg]5f²		5f ²F°_5/2	(448)	22	L582
102	No XXII	+21	Nobelium	Tl	[Hg]5f	²F°_⁵/₂	6s² ¹S₀	(475)	24	L582
102	No XXIII	+22	Nobelium	Hg	[Xe]4f¹⁴5d¹⁰6s²	¹S₀	6s ²S_1/2	(496)	4	L8672c99
102	No XXIV	+23	Nobelium	Au	[Xe]4f¹⁴5d¹⁰6s	²S_¹/₂	5d¹⁰ ¹S₀	(520)	4	L8672c99
102	No XXV	+24	Nobelium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(701)	4	L8672c99
102	No XXVI	+25	Nobelium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(734)	4	L8672c99
102	No XXVII	+26	Nobelium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(768)	4	L8672c99
102	No XXVIII	+27	Nobelium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(805)	4	L8672c99
102	No XXIX	+28	Nobelium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(840)	4	L8672c99
102	No XXX	+29	Nobelium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(875)	4	L8672c99
102	No XXXI	+30	Nobelium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(934)	4	L8672c99
102	No XXXII	+31	Nobelium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(969)	4	L8672c99
102	No XXXIII	+32	Nobelium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(1 010)	4	L8672c99
102	No XXXIV	+33	Nobelium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(1 045)	5	L8672c99
102	No XXXV	+34	Nobelium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	(1 220)	60	L582
102	No XXXVI	+35	Nobelium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(1 260)	60	L582
102	No XXXVII	+36	Nobelium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(1 300)	70	L582
102	No XXXVIII	+37	Nobelium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(1 350)	70	L582
102	No XXXIX	+38	Nobelium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(1 500)	70	L582
102	No XL	+39	Nobelium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(1 550)	80	L582
102	No XLI	+40	Nobelium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2	(1 680)	80	L582
102	No XLII	+41	Nobelium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀	(1 730)	90	L582
102	No XLIII	+42	Nobelium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2	(1 920)	100	L582
102	No XLIV	+43	Nobelium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(2 010)	100	L582
102	No XLV	+44	Nobelium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(2 110)	110	L582
102	No XLVI	+45	Nobelium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(2 200)	110	L582
102	No XLVII	+46	Nobelium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(2 290)	110	L582
102	No XLVIII	+47	Nobelium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(2 380)	120	L582
102	No XLIX	+48	Nobelium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(2 470)	120	L582
102	No L	+49	Nobelium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(2 570)	120	L582
102	No LI	+50	Nobelium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(2 680)	140	L582
102	No LII	+51	Nobelium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(2 760)	140	L582
102	No LIII	+52	Nobelium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(2 860)	150	L582
102	No LIV	+53	Nobelium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(2 950)	150	L582
102	No LV	+54	Nobelium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(3 050)	150	L582
102	No LVI	+55	Nobelium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(3 140)	160	L582
102	No LVII	+56	Nobelium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(3 627)	5	L8672c99
102	No LVIII	+57	Nobelium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(3 705)	6	L8672c99
102	No LIX	+58	Nobelium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(3 790)	6	L8672c99
102	No LX	+59	Nobelium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(3 878)	7	L8672c99
102	No LXI	+60	Nobelium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(3 962)	10	L8672c99
102	No LXII	+61	Nobelium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(4 045)	12	L8672c99
102	No LXIII	+62	Nobelium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(4 234)	15	L8672c99
102	No LXIV	+63	Nobelium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(4 320)	19	L8672c99
102	No LXV	+64	Nobelium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(4 413)	24	L8672c99
102	No LXVI	+65	Nobelium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(4 500)	30	L8672c99
102	No LXVII	+66	Nobelium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(4 850)	40	L8672c99
102	No LXVIII	+67	Nobelium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(4 930)	40	L8672c99
102	No LXIX	+68	Nobelium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(5 030)	50	L8672c99
102	No LXX	+69	Nobelium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(5 110)	50	L8672c99
102	No LXXI	+70	Nobelium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(5 750)	60	L8672c99
102	No LXXII	+71	Nobelium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(5 850)	60	L8672c99
102	No LXXIII	+72	Nobelium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(6 110)	70	L8672c99
102	No LXXIV	+73	Nobelium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	(6 210)	90	L8672c99
102	No LXXV	+74	Nobelium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(9 680)	90	L8672c99
102	No LXXVI	+75	Nobelium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(9 860)	100	L8672c99
102	No LXXVII	+76	Nobelium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(10 060)	110	L8672c99
102	No LXXVIII	+77	Nobelium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(10 270)	120	L8672c99
102	No LXXIX	+78	Nobelium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(10 470)	120	L8672c99
102	No LXXX	+79	Nobelium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(10 660)	140	L8672c99
102	No LXXXI	+80	Nobelium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(11 200)	150	L8672c99
102	No LXXXII	+81	Nobelium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(11 410)	160	L8672c99
102	No LXXXIII	+82	Nobelium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(11 630)	170	L8672c99
102	No LXXXIV	+83	Nobelium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(11 840)	190	L8672c99
102	No LXXXV	+84	Nobelium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(12 420)	200	L8672c99
102	No LXXXVI	+85	Nobelium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(12 600)	220	L8672c99
102	No LXXXVII	+86	Nobelium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(12 800)	240	L8672c99
102	No LXXXVIII	+87	Nobelium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(12 980)	250	L8672c99
102	No LXXXIX	+88	Nobelium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(15 000)	300	L8672c99
102	No XC	+89	Nobelium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(15 200)	300	L8672c99
102	No XCI	+90	Nobelium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(15 600)	300	L8672c99
102	No XCII	+91	Nobelium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(15 800)	300	L8672c99
102	No XCIII	+92	Nobelium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(31 700)	400	L8672c99
102	No XCIV	+93	Nobelium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(32 200)	400	L8672c99
102	No XCV	+94	Nobelium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(32 700)	400	L8672c99
102	No XCVI	+95	Nobelium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(33 200)	400	L8672c99
102	No XCVII	+96	Nobelium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(40 500)	400	L8672c99
102	No XCVIII	+97	Nobelium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(41 200)	400	L8672c99
102	No XCIX	+98	Nobelium	Be	1s²2s²	¹S₀	2s ²S_1/2	(42 100)	500	L8672c99
102	No C	+99	Nobelium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(42 632)	6	L582c106
102	No CI	+100	Nobelium	He	1s²	¹S₀	1s ²S_1/2
102	No CII	+101	Nobelium	H	1s	²S_¹/₂		(168 806)	7	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Lr (all spectra) 103 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy ^b (eV)	Uncertainty^c (eV)	References
103	Lr I	0	Lawrencium	Lr	[Rn]5f¹⁴7s²7p	²P°_¹/₂	7s² ¹S₀	4.96	0.08	L19016
103	Lr II	+1	Lawrencium	No	[Rn]5f¹⁴7s²	¹S₀	5f¹⁴7s ²S_1/2	(14.54)	0.04	L19691
103	Lr III	+2	Lawrencium	Md	[Rn]5f¹⁴7s	²S_¹/₂	5f¹⁴ ¹S₀	(21.80)	0.04	L19691
103	Lr IV	+3	Lawrencium	Fm	[Rn]5f¹⁴	¹S₀	5f¹³ ²F°_7/2	[43.6]	0.4	L13741c99
103	Lr V	+4	Lawrencium	Es	[Rn]5f¹³	²F°_⁷/₂	5f¹² ³H₆	(56.0)	1.9	L8672c99
103	Lr VI	+5	Lawrencium	Cf	[Rn]5f¹²	³H₆	5f¹¹ ⁴I°_15/2	(80.0)	2.0	L8672c99
103	Lr VII	+6	Lawrencium	Bk	[Rn]5f¹¹	⁴I°_¹⁵/₂	5f¹⁰ ⁵I₈	(96.0)	2.0	L8672c99
103	Lr VIII	+7	Lawrencium	Cm	[Rn]5f¹⁰	⁵I₈	5f⁹ ⁶H°_15/2	(121.0)	2.1	L8672c99
103	Lr IX	+8	Lawrencium	Am	[Rn]5f⁹	⁶H°_¹⁵/₂	5f⁸ ⁷F₆	(143.0)	2.2	L8672c99
103	Lr X	+9	Lawrencium	Pu	[Rn]5f⁸	⁷F₆	5f⁷ ⁸S°_7/2	(165.0)	2.2	L8672c99
103	Lr XI	+10	Lawrencium	Np	[Rn]5f⁷	⁸S°_⁷/₂	5f⁶ ⁷F₀	(197.0)	2.4	L8672c99
103	Lr XII	+11	Lawrencium	U	[Rn]5f⁶	⁷F₀	5f⁵ ⁶H°_5/2	(216.0)	2.5	L8672c99
103	Lr XIII	+12	Lawrencium	Pa	[Rn]5f⁵	⁶H°_⁵/₂	5f⁴ ⁵I₄	(244)	3	L8672c99
103	Lr XIV	+13	Lawrencium	Th	[Rn]5f⁴	⁵I₄	5f⁸6p	(269)	14	L582
103	Lr XV	+14	Lawrencium	Ac	[Hg]5f⁸6p	°	5f⁸	(290)	15	L582
103	Lr XVI	+15	Lawrencium	Ra	[Hg]5f⁸		5f⁷°	(322)	12	L582
103	Lr XVII	+16	Lawrencium	Fr	[Hg]5f⁷	°	5f⁶	(344)	17	L582
103	Lr XVIII	+17	Lawrencium	Rn	[Hg]5f⁶		5f⁵°	(374)	19	L582
103	Lr XIX	+18	Lawrencium	At	[Hg]5f⁵	°	5f⁴	(403)	20	L582
103	Lr XX	+19	Lawrencium	Po	[Hg]5f⁴		5f³°	(431)	21	L582
103	Lr XXI	+20	Lawrencium	Bi	[Hg]5f³	°	5f²	(459)	24	L582
103	Lr XXII	+21	Lawrencium	Pb	[Hg]5f²		5f ²F°_5/2	(487)	25	L582
103	Lr XXIII	+22	Lawrencium	Tl	[Hg]5f	²F°_⁵/₂	5f6s°	(510)	30	L582
103	Lr XXIV	+23	Lawrencium	Hg	[Xe]4f¹⁴5d¹⁰5f6s	°	5f ²F_5/2°	(540)	30	L582
103	Lr XXV	+24	Lawrencium	Au	[Xe]4f¹⁴5d¹⁰5f	²F°_⁵/₂	5d¹⁰ ¹S₀	(560)	30	L582
103	Lr XXVI	+25	Lawrencium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(745)	4	L8672c99
103	Lr XXVII	+26	Lawrencium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(779)	4	L8672c99
103	Lr XXVIII	+27	Lawrencium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(814)	4	L8672c98,c99
103	Lr XXIX	+28	Lawrencium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(852)	4	L8672c98,c99
103	Lr XXX	+29	Lawrencium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(888)	4	L8672c99
103	Lr XXXI	+30	Lawrencium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(922)	4	L8672c99
103	Lr XXXII	+31	Lawrencium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(985)	4	L8672c99
103	Lr XXXIII	+32	Lawrencium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(1 020)	4	L8672c99
103	Lr XXXIV	+33	Lawrencium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(1 061)	5	L8672c99
103	Lr XXXV	+34	Lawrencium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(1 098)	5	L8672c99
103	Lr XXXVI	+35	Lawrencium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2	(1 280)	60	L582
103	Lr XXXVII	+36	Lawrencium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂	(1 320)	70	L582
103	Lr XXXVIII	+37	Lawrencium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2	(1 360)	70	L582
103	Lr XXXIX	+38	Lawrencium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀	(1 410)	70	L582
103	Lr XL	+39	Lawrencium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2	(1 570)	80	L582
103	Lr XLI	+40	Lawrencium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀	(1 620)	80	L582
103	Lr XLII	+41	Lawrencium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2	(1 760)	90	L582
103	Lr XLIII	+42	Lawrencium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀	(1 810)	90	L582
103	Lr XLIV	+43	Lawrencium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2	(2 010)	100	L582
103	Lr XLV	+44	Lawrencium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²	(2 100)	110	L582
103	Lr XLVI	+45	Lawrencium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2	(2 190)	110	L582
103	Lr XLVII	+46	Lawrencium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈	(2 290)	110	L582
103	Lr XLVIII	+47	Lawrencium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2	(2 380)	120	L582
103	Lr XLIX	+48	Lawrencium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆	(2 470)	120	L582
103	Lr L	+49	Lawrencium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2	(2 570)	120	L582
103	Lr LI	+50	Lawrencium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀	(2 670)	140	L582
103	Lr LII	+51	Lawrencium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2	(2 780)	140	L582
103	Lr LIII	+52	Lawrencium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄	(2 860)	150	L582
103	Lr LIV	+53	Lawrencium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2	(2 960)	150	L582
103	Lr LV	+54	Lawrencium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄	(3 060)	150	L582
103	Lr LVI	+55	Lawrencium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2	(3 150)	160	L582
103	Lr LVII	+56	Lawrencium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀	(3 250)	160	L582
103	Lr LVIII	+57	Lawrencium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(3 741)	6	L8672c99
103	Lr LIX	+58	Lawrencium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(3 821)	6	L8672c99
103	Lr LX	+59	Lawrencium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(3 906)	7	L8672c99
103	Lr LXI	+60	Lawrencium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(3 996)	10	L8672c99
103	Lr LXII	+61	Lawrencium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(4 082)	12	L8672c99
103	Lr LXIII	+62	Lawrencium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(4 165)	15	L8672c99
103	Lr LXIV	+63	Lawrencium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(4 360)	19	L8672c99
103	Lr LXV	+64	Lawrencium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(4 448)	24	L8672c99
103	Lr LXVI	+65	Lawrencium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(4 540)	30	L8672c99
103	Lr LXVII	+66	Lawrencium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(4 630)	40	L8672c99
103	Lr LXVIII	+67	Lawrencium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(4 990)	40	L8672c99
103	Lr LXIX	+68	Lawrencium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(5 070)	50	L8672c99
103	Lr LXX	+69	Lawrencium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(5 160)	50	L8672c99
103	Lr LXXI	+70	Lawrencium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(5 250)	60	L8672c99
103	Lr LXXII	+71	Lawrencium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(5 920)	60	L8672c99
103	Lr LXXIII	+72	Lawrencium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(6 030)	70	L8672c99
103	Lr LXXIV	+73	Lawrencium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(6 290)	90	L8672c99
103	Lr LXXV	+74	Lawrencium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	(6 390)	90	L8672c99
103	Lr LXXVI	+75	Lawrencium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(9 920)	100	L8672c99
103	Lr LXXVII	+76	Lawrencium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(10 110)	110	L8672c99
103	Lr LXXVIII	+77	Lawrencium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(10 310)	120	L8672c99
103	Lr LXXIX	+78	Lawrencium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(10 520)	120	L8672c99
103	Lr LXXX	+79	Lawrencium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(10 720)	140	L8672c99
103	Lr LXXXI	+80	Lawrencium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(10 920)	150	L8672c99
103	Lr LXXXII	+81	Lawrencium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(11 470)	160	L8672c99
103	Lr LXXXIII	+82	Lawrencium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(11 680)	170	L8672c99
103	Lr LXXXIV	+83	Lawrencium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(11 910)	190	L8672c99
103	Lr LXXXV	+84	Lawrencium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(12 120)	200	L8672c99
103	Lr LXXXVI	+85	Lawrencium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(12 710)	220	L8672c99
103	Lr LXXXVII	+86	Lawrencium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(12 890)	240	L8672c99
103	Lr LXXXVIII	+87	Lawrencium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(13 090)	250	L8672c99
103	Lr LXXXIX	+88	Lawrencium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(13 300)	300	L8672c99
103	Lr XC	+89	Lawrencium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(15 300)	300	L8672c99
103	Lr XCI	+90	Lawrencium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(15 600)	300	L8672c99
103	Lr XCII	+91	Lawrencium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(16 000)	300	L8672c99
103	Lr XCIII	+92	Lawrencium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(16 200)	400	L8672c99
103	Lr XCIV	+93	Lawrencium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(32 400)	400	L8672c99
103	Lr XCV	+94	Lawrencium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(32 900)	400	L8672c99
103	Lr XCVI	+95	Lawrencium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(33 400)	400	L8672c99
103	Lr XCVII	+96	Lawrencium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(33 900)	400	L8672c99
103	Lr XCVIII	+97	Lawrencium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(41 600)	400	L8672c99
103	Lr XCIX	+98	Lawrencium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(42 300)	500	L8672c99
103	Lr C	+99	Lawrencium	Be	1s²2s²	¹S₀	2s ²S_1/2	(43 200)	500	L8672c99
103	Lr CI	+100	Lawrencium	Li	1s²2s	²S_¹/₂	1s² ¹S₀	(43 759)	6	L582c106
103	Lr CII	+101	Lawrencium	He	1s²	¹S₀	1s ²S_1/2
103	Lr CIII	+102	Lawrencium	H	1s	²S_¹/₂		(172 930)	7	L7188

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Rf (all spectra) 93 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy ^b (eV)	Uncertainty^c (eV)	References
104	Rf I	0	Rutherfordium	Rf	[Rn]5f¹⁴6d²7s²	³F₂	6d7s² ²D_3/2	(6.02)	0.04	L19691
104	Rf II	+1	Rutherfordium	Lr	[Rn]5f¹⁴6d7s²	²D_³/₂	7s² ¹S₀	(14.35)	0.04	L19691
104	Rf III	+2	Rutherfordium	No	[Rn]5f¹⁴7s²	¹S₀	5f¹⁴7s ²S_1/2	(23.84)	0.04	L19691
104	Rf IV	+3	Rutherfordium	Md	[Rn]5f¹⁴7s	²S_¹/₂	5f¹⁴ ¹S₀	(31.87)	0.04	L19691
104	Rf V	+4	Rutherfordium	Fm	[Rn]5f¹⁴	¹S₀	5f¹³ ²F°_7/2	(64.0)	1.9	L8672c99
104	Rf VI	+5	Rutherfordium	Es	[Rn]5f¹³	²F°_⁷/₂	5f¹² ³H₆	(77.0)	2.0	L8672c99
104	Rf VII	+6	Rutherfordium	Cf	[Rn]5f¹²	³H₆	5f¹¹ ⁴I°_15/2	(102.0)	2.0	L8672c99
104	Rf VIII	+7	Rutherfordium	Bk	[Rn]5f¹¹	⁴I°_¹⁵/₂	5f¹⁰ ⁵I₈	(119.0)	2.1	L8672c99
104	Rf IX	+8	Rutherfordium	Cm	[Rn]5f¹⁰	⁵I₈	5f⁹ ⁶H°_15/2	(146.1)	2.2	L8672c99
104	Rf X	+9	Rutherfordium	Am	[Rn]5f⁹	⁶H°_¹⁵/₂	5f⁸ ⁷F₆	(169.0)	2.2	L8672c99
104	Rf XI	+10	Rutherfordium	Pu	[Rn]5f⁸	⁷F₆	5f⁷ ⁸S°_7/2	(193.0)	2.4	L8672c99
104	Rf XII	+11	Rutherfordium	Np	[Rn]5f⁷	⁸S°_⁷/₂	5f⁶ ⁷F₀	(225.0)	2.5	L8672c99
104	Rf XIII	+12	Rutherfordium	U	[Rn]5f⁶	⁷F₀	5f⁵ ⁶H°_5/2	(244)	3	L8672c99
104	Rf XIV	+13	Rutherfordium	Pa	[Rn]5f⁵	⁶H°_⁵/₂	5f⁴ ⁵I₄	(275)	3	L8672c99
104	Rf XV	+14	Rutherfordium	Th	[Rn]5f⁴	⁵I₄
104	Rf XXVII	+26	Rutherfordium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(791)	4	L8672c99
104	Rf XXVIII	+27	Rutherfordium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(825)	4	L8672c99
104	Rf XXIX	+28	Rutherfordium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(860)	4	L8672c99
104	Rf XXX	+29	Rutherfordium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(899)	4	L8672c99
104	Rf XXXI	+30	Rutherfordium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(936)	4	L8672c99
104	Rf XXXII	+31	Rutherfordium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(972)	4	L8672c99
104	Rf XXXIII	+32	Rutherfordium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(1 036)	4	L8672c99
104	Rf XXXIV	+33	Rutherfordium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(1 073)	5	L8672c99
104	Rf XXXV	+34	Rutherfordium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(1 114)	5	L8672c99
104	Rf XXXVI	+35	Rutherfordium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(1 151)	5	L8672c99
104	Rf XXXVII	+36	Rutherfordium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2
104	Rf XXXVIII	+37	Rutherfordium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂
104	Rf XXXIX	+38	Rutherfordium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2
104	Rf XL	+39	Rutherfordium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀
104	Rf XLI	+40	Rutherfordium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2
104	Rf XLII	+41	Rutherfordium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀
104	Rf XLIII	+42	Rutherfordium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2
104	Rf XLIV	+43	Rutherfordium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀
104	Rf XLV	+44	Rutherfordium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2
104	Rf XLVI	+45	Rutherfordium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²
104	Rf XLVII	+46	Rutherfordium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2
104	Rf XLVIII	+47	Rutherfordium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈
104	Rf XLIX	+48	Rutherfordium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2
104	Rf L	+49	Rutherfordium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆
104	Rf LI	+50	Rutherfordium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2
104	Rf LII	+51	Rutherfordium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀
104	Rf LIII	+52	Rutherfordium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2
104	Rf LIV	+53	Rutherfordium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄
104	Rf LV	+54	Rutherfordium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2
104	Rf LVI	+55	Rutherfordium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄
104	Rf LVII	+56	Rutherfordium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2
104	Rf LVIII	+57	Rutherfordium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀
104	Rf LIX	+58	Rutherfordium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(3 857)	6	L8672c99
104	Rf LX	+59	Rutherfordium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(3 938)	7	L8672c99
104	Rf LXI	+60	Rutherfordium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(4 025)	10	L8672c99
104	Rf LXII	+61	Rutherfordium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(4 116)	12	L8672c99
104	Rf LXIII	+62	Rutherfordium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(4 203)	15	L8672c99
104	Rf LXIV	+63	Rutherfordium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(4 287)	19	L8672c99
104	Rf LXV	+64	Rutherfordium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(4 489)	24	L8672c99
104	Rf LXVI	+65	Rutherfordium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(4 580)	30	L8672c99
104	Rf LXVII	+66	Rutherfordium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(4 670)	40	L8672c99
104	Rf LXVIII	+67	Rutherfordium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(4 760)	40	L8672c99
104	Rf LXIX	+68	Rutherfordium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(5 130)	50	L8672c99
104	Rf LXX	+69	Rutherfordium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(5 210)	50	L8672c99
104	Rf LXXI	+70	Rutherfordium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(5 300)	60	L8672c99
104	Rf LXXII	+71	Rutherfordium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(5 390)	60	L8672c99
104	Rf LXXIII	+72	Rutherfordium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(6 100)	70	L8672c99
104	Rf LXXIV	+73	Rutherfordium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(6 200)	90	L8672c99
104	Rf LXXV	+74	Rutherfordium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(6 470)	90	L8672c99
104	Rf LXXVI	+75	Rutherfordium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	(6 570)	100	L8672c99
104	Rf LXXVII	+76	Rutherfordium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(10 170)	110	L8672c99
104	Rf LXXVIII	+77	Rutherfordium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(10 360)	120	L8672c99
104	Rf LXXIX	+78	Rutherfordium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(10 560)	120	L8672c99
104	Rf LXXX	+79	Rutherfordium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(10 780)	140	L8672c99
104	Rf LXXXI	+80	Rutherfordium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(10 980)	150	L8672c99
104	Rf LXXXII	+81	Rutherfordium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(11 180)	160	L8672c99
104	Rf LXXXIII	+82	Rutherfordium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(11 750)	170	L8672c99
104	Rf LXXXIV	+83	Rutherfordium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(11 960)	190	L8672c99
104	Rf LXXXV	+84	Rutherfordium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(12 200)	200	L8672c99
104	Rf LXXXVI	+85	Rutherfordium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(12 410)	220	L8672c99
104	Rf LXXXVII	+86	Rutherfordium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(13 010)	240	L8672c99
104	Rf LXXXVIII	+87	Rutherfordium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(13 190)	250	L8672c99
104	Rf LXXXIX	+88	Rutherfordium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(13 400)	300	L8672c99
104	Rf XC	+89	Rutherfordium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(13 600)	300	L8672c99
104	Rf XCI	+90	Rutherfordium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(15 800)	300	L8672c99
104	Rf XCII	+91	Rutherfordium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(16 000)	300	L8672c99
104	Rf XCIII	+92	Rutherfordium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(16 400)	400	L8672c99
104	Rf XCIV	+93	Rutherfordium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(16 700)	400	L8672c99
104	Rf XCV	+94	Rutherfordium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(33 100)	400	L8672c99
104	Rf XCVI	+95	Rutherfordium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(33 600)	400	L8672c99
104	Rf XCVII	+96	Rutherfordium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(34 100)	400	L8672c99
104	Rf XCVIII	+97	Rutherfordium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(34 600)	400	L8672c99
104	Rf XCIX	+98	Rutherfordium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(42 700)	500	L8672c99
104	Rf C	+99	Rutherfordium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(43 400)	500	L8672c99
104	Rf CI	+100	Rutherfordium	Be	1s²2s²	¹S₀	2s ²S_1/2	(44 300)	500	L8672c99
104	Rf CII	+101	Rutherfordium	Li	1s²2s	²S_¹/₂	1s² ¹S₀
104	Rf CIII	+102	Rutherfordium	He	1s²	¹S₀	1s ²S_1/2
104	Rf CIV	+103	Rutherfordium	H	1s	²S_¹/₂		(177 148)	8	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶
[Kr] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶
[Cd] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²
[Xe] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶
[Rn] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶4f¹⁴5d¹⁰6s²6p⁶
^bIf the listed ionization energy is blank, it is unknown. Only the ground state is known.
^cUncertainties of some of the listed values are unknown.

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Db (all spectra) 94 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy ^b (eV)	Uncertainty^c (eV)	References
105	Db I	0	Dubnium	Db	[Rn]5f¹⁴6d³7s²	⁴F_³/₂	6d²7s² ³F₂	(6.8)	0.5	L12825
105	Db II	+1	Dubnium	Rf	[Rn]5f¹⁴6d²7s²	³F₂	6d²7s _3/2	(14.0)	1.6	L8672c99
105	Db III	+2	Dubnium	Lr	[Rn]5f¹⁴6d²7s	_³/₂	6d² ₂	(23.1)	1.6	L8672c99
105	Db IV	+3	Dubnium	No	[Rn]5f¹⁴6d²	₂	5f¹⁴6d ²D_3/2	(33.0)	1.7	L8672c99
105	Db V	+4	Dubnium	Md	[Rn]5f¹⁴6d	²D_³/₂	5f¹⁴ ¹S₀	(43.0)	1.9	L8672c99
105	Db VI	+5	Dubnium	Fm	[Rn]5f¹⁴	¹S₀	5f¹³ ²F°_7/2	(86.0)	2.0	L8672c99
105	Db VII	+6	Dubnium	Es	[Rn]5f¹³	²F°_⁷/₂	5f¹² ³H₆	(98.9)	2.0	L8672c99
105	Db VIII	+7	Dubnium	Cf	[Rn]5f¹²	³H₆	5f¹¹ ⁴I°_15/2	(126.0)	2.1	L8672c99
105	Db IX	+8	Dubnium	Bk	[Rn]5f¹¹	⁴I°_¹⁵/₂	5f¹⁰ ⁵I₈	(145.1)	2.2	L8672c99
105	Db X	+9	Dubnium	Cm	[Rn]5f¹⁰	⁵I₈	5f⁹ ⁶H°_15/2	(172.0)	2.2	L8672c99
105	Db XI	+10	Dubnium	Am	[Rn]5f⁹	⁶H°_¹⁵/₂	5f⁸ ⁷F₆	(196.0)	2.4	L8672c99
105	Db XII	+11	Dubnium	Pu	[Rn]5f⁸	⁷F₆	5f⁷ ⁸S°_7/2	(220.9)	2.5	L8672c99
105	Db XIII	+12	Dubnium	Np	[Rn]5f⁷	⁸S°_⁷/₂	5f⁶ ⁷F₀	(254)	3	L8672c99
105	Db XIV	+13	Dubnium	U	[Rn]5f⁶	⁷F₀	5f⁵ ⁶H°_5/2	(274)	3	L8672c99
105	Db XV	+14	Dubnium	Pa	[Rn]5f⁵	⁶H°_⁵/₂	5f⁴ ⁵I₄	(307)	3	L8672c99
105	Db XVI	+15	Dubnium	Th	[Rn]5f⁴	⁵I₄
105	Db XXVIII	+27	Dubnium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(838)	4	L8672c99
105	Db XXIX	+28	Dubnium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(872)	4	L8672c99
105	Db XXX	+29	Dubnium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(908)	4	L8672c99
105	Db XXXI	+30	Dubnium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(948)	4	L8672c99
105	Db XXXII	+31	Dubnium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(985)	4	L8672c99
105	Db XXXIII	+32	Dubnium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(1 022)	4	L8672c99
105	Db XXXIV	+33	Dubnium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(1 089)	5	L8672c99
105	Db XXXV	+34	Dubnium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(1 126)	5	L8672c99
105	Db XXXVI	+35	Dubnium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(1 168)	5	L8672c99
105	Db XXXVII	+36	Dubnium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(1 207)	5	L8672c99
105	Db XXXVIII	+37	Dubnium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2
105	Db XXXIX	+38	Dubnium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂
105	Db XL	+39	Dubnium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2
105	Db XLI	+40	Dubnium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀
105	Db XLII	+41	Dubnium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2
105	Db XLIII	+42	Dubnium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀
105	Db XLIV	+43	Dubnium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2
105	Db XLV	+44	Dubnium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀
105	Db XLVI	+45	Dubnium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2
105	Db XLVII	+46	Dubnium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²
105	Db XLVIII	+47	Dubnium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2
105	Db XLIX	+48	Dubnium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈
105	Db L	+49	Dubnium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2
105	Db LI	+50	Dubnium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆
105	Db LII	+51	Dubnium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2
105	Db LIII	+52	Dubnium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀
105	Db LIV	+53	Dubnium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2
105	Db LV	+54	Dubnium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄
105	Db LVI	+55	Dubnium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2
105	Db LVII	+56	Dubnium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄
105	Db LVIII	+57	Dubnium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2
105	Db LIX	+58	Dubnium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀
105	Db LX	+59	Dubnium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(3 975)	7	L8672c99
105	Db LXI	+60	Dubnium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(4 057)	10	L8672c99
105	Db LXII	+61	Dubnium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(4 145)	12	L8672c99
105	Db LXIII	+62	Dubnium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(4 237)	15	L8672c99
105	Db LXIV	+63	Dubnium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(4 326)	19	L8672c99
105	Db LXV	+64	Dubnium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(4 411)	24	L8672c99
105	Db LXVI	+65	Dubnium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(4 620)	30	L8672c99
105	Db LXVII	+66	Dubnium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(4 710)	40	L8672c99
105	Db LXVIII	+67	Dubnium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(4 810)	40	L8672c99
105	Db LXIX	+68	Dubnium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(4 900)	50	L8672c99
105	Db LXX	+69	Dubnium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(5 260)	50	L8672c99
105	Db LXXI	+70	Dubnium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(5 350)	60	L8672c99
105	Db LXXII	+71	Dubnium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(5 450)	60	L8672c99
105	Db LXXIII	+72	Dubnium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(5 530)	70	L8672c99
105	Db LXXIV	+73	Dubnium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(6 280)	90	L8672c99
105	Db LXXV	+74	Dubnium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(6 380)	90	L8672c99
105	Db LXXVI	+75	Dubnium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(6 650)	100	L8672c99
105	Db LXXVII	+76	Dubnium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	(6 760)	110	L8672c99
105	Db LXXVIII	+77	Dubnium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(10 420)	120	L8672c99
105	Db LXXIX	+78	Dubnium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(10 610)	120	L8672c99
105	Db LXXX	+79	Dubnium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(10 820)	140	L8672c99
105	Db LXXXI	+80	Dubnium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(11 040)	150	L8672c99
105	Db LXXXII	+81	Dubnium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(11 240)	160	L8672c99
105	Db LXXXIII	+82	Dubnium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(11 440)	170	L8672c99
105	Db LXXXIV	+83	Dubnium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(12 040)	190	L8672c99
105	Db LXXXV	+84	Dubnium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(12 250)	200	L8672c99
105	Db LXXXVI	+85	Dubnium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(12 480)	220	L8672c99
105	Db LXXXVII	+86	Dubnium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(12 700)	240	L8672c99
105	Db LXXXVIII	+87	Dubnium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(13 300)	250	L8672c99
105	Db LXXXIX	+88	Dubnium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(13 500)	300	L8672c99
105	Db XC	+89	Dubnium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(13 700)	300	L8672c99
105	Db XCI	+90	Dubnium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(13 900)	300	L8672c99
105	Db XCII	+91	Dubnium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(16 200)	300	L8672c99
105	Db XCIII	+92	Dubnium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(16 400)	400	L8672c99
105	Db XCIV	+93	Dubnium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(16 900)	400	L8672c99
105	Db XCV	+94	Dubnium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(17 100)	400	L8672c99
105	Db XCVI	+95	Dubnium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(33 800)	400	L8672c99
105	Db XCVII	+96	Dubnium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(34 300)	400	L8672c99
105	Db XCVIII	+97	Dubnium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(34 800)	400	L8672c99
105	Db XCIX	+98	Dubnium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(35 300)	500	L8672c99
105	Db C	+99	Dubnium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(43 800)	500	L8672c99
105	Db CI	+100	Dubnium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(44 500)	500	L8672c99
105	Db CII	+101	Dubnium	Be	1s²2s²	¹S₀	2s ²S_1/2	(45 400)	500	L8672c99
105	Db CIII	+102	Dubnium	Li	1s²2s	²S_¹/₂	1s² ¹S₀
105	Db CIV	+103	Dubnium	He	1s²	¹S₀	1s ²S_1/2
105	Db CV	+104	Dubnium	H	1s	²S_¹/₂		(181 444)	9	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶
[Kr] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶
[Cd] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²
[Xe] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶
[Rn] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶4f¹⁴5d¹⁰6s²6p⁶
^bIf the listed ionization energy is blank, it is unknown. Only the ground state is known.
^cUncertainties of some of the listed values are unknown.

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Sg (all spectra) 95 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy ^b (eV)	Uncertainty^c (eV)	References
106	Sg I	0	Seaborgium	Sg	[Rn]5f¹⁴6d⁴7s²	₀	6d³7s² ⁴F_3/2	[7.8]	0.5	L7830
106	Sg II	+1	Seaborgium	Db	[Rn]5f¹⁴6d³7s²	⁴F_³/₂	6d³7s ₁	[17.1]	0.5	L7830
106	Sg III	+2	Seaborgium	Rf	[Rn]5f¹⁴6d³7s	₁	6d³ _3/2	[25.8]	0.5	L7830
106	Sg IV	+3	Seaborgium	Lr	[Rn]5f¹⁴6d³	_³/₂	6d² ₂	[35.5]	0.5	L7830
106	Sg V	+4	Seaborgium	No	[Rn]5f¹⁴6d²	₂	5f¹⁴6d ²D_3/2	[47.2]	0.5	L7830
106	Sg VI	+5	Seaborgium	Md	[Rn]5f¹⁴6d	²D_³/₂	5f¹⁴ ¹S₀	[59.3]	0.5	L7830
106	Sg VII	+6	Seaborgium	Fm	[Rn]5f¹⁴	¹S₀	5f¹³ ²F°_7/2	(109.0)	2.0	L8672c99
106	Sg VIII	+7	Seaborgium	Es	[Rn]5f¹³	²F°_⁷/₂	5f¹² ³H₆	(122.0)	2.1	L8672c99
106	Sg IX	+8	Seaborgium	Cf	[Rn]5f¹²	³H₆	5f¹¹ ⁴I°_15/2	(152.0)	2.2	L8672c99
106	Sg X	+9	Seaborgium	Bk	[Rn]5f¹¹	⁴I°_¹⁵/₂	5f¹⁰ ⁵I₈	(170.0)	2.2	L8672c99
106	Sg XI	+10	Seaborgium	Cm	[Rn]5f¹⁰	⁵I₈	5f⁹ ⁶H°_15/2	(200.0)	2.4	L8672c99
106	Sg XII	+11	Seaborgium	Am	[Rn]5f⁹	⁶H°_¹⁵/₂	5f⁸ ⁷F₆	(224.0)	2.5	L8672c99
106	Sg XIII	+12	Seaborgium	Pu	[Rn]5f⁸	⁷F₆	5f⁷ ⁸S°_7/2	(251)	3	L8672c99
106	Sg XIV	+13	Seaborgium	Np	[Rn]5f⁷	⁸S°_⁷/₂	5f⁶ ⁷F₀	(285)	3	L8672c99
106	Sg XV	+14	Seaborgium	U	[Rn]5f⁶	⁷F₀	5f⁵ ⁶H°_5/2	(306)	3	L8672c99
106	Sg XVI	+15	Seaborgium	Pa	[Rn]5f⁵	⁶H°_⁵/₂	5f⁴ ⁵I₄	(339)	3	L8672c99
106	Sg XVII	+16	Seaborgium	Th	[Rn]5f⁴	⁵I₄
106	Sg XXIX	+28	Seaborgium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(885)	4	L8672c99
106	Sg XXX	+29	Seaborgium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(921)	4	L8672c99
106	Sg XXXI	+30	Seaborgium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(958)	4	L8672c98,c99
106	Sg XXXII	+31	Seaborgium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(998)	4	L8672c98,c99
106	Sg XXXIII	+32	Seaborgium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(1 036)	4	L8672c99
106	Sg XXXIV	+33	Seaborgium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(1 073)	5	L8672c99
106	Sg XXXV	+34	Seaborgium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(1 143)	5	L8672c99
106	Sg XXXVI	+35	Seaborgium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(1 181)	5	L8672c99
106	Sg XXXVII	+36	Seaborgium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(1 223)	5	L8672c99
106	Sg XXXVIII	+37	Seaborgium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(1 263)	4	L8672c99
106	Sg XXXIX	+38	Seaborgium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2
106	Sg XL	+39	Seaborgium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂
106	Sg XLI	+40	Seaborgium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2
106	Sg XLII	+41	Seaborgium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀
106	Sg XLIII	+42	Seaborgium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2
106	Sg XLIV	+43	Seaborgium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀
106	Sg XLV	+44	Seaborgium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2
106	Sg XLVI	+45	Seaborgium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀
106	Sg XLVII	+46	Seaborgium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2
106	Sg XLVIII	+47	Seaborgium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²
106	Sg XLIX	+48	Seaborgium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2
106	Sg L	+49	Seaborgium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈
106	Sg LI	+50	Seaborgium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2
106	Sg LII	+51	Seaborgium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆
106	Sg LIII	+52	Seaborgium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2
106	Sg LIV	+53	Seaborgium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀
106	Sg LV	+54	Seaborgium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2
106	Sg LVI	+55	Seaborgium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄
106	Sg LVII	+56	Seaborgium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2
106	Sg LVIII	+57	Seaborgium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄
106	Sg LIX	+58	Seaborgium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2
106	Sg LX	+59	Seaborgium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀
106	Sg LXI	+60	Seaborgium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(4 095)	10	L8672c99
106	Sg LXII	+61	Seaborgium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(4 178)	12	L8672c99
106	Sg LXIII	+62	Seaborgium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(4 267)	15	L8672c99
106	Sg LXIV	+63	Seaborgium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(4 360)	19	L8672c99
106	Sg LXV	+64	Seaborgium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(4 450)	24	L8672c99
106	Sg LXVI	+65	Seaborgium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(4 540)	30	L8672c99
106	Sg LXVII	+66	Seaborgium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(4 750)	40	L8672c99
106	Sg LXVIII	+67	Seaborgium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(4 840)	40	L8672c99
106	Sg LXIX	+68	Seaborgium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(4 940)	50	L8672c99
106	Sg LXX	+69	Seaborgium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(5 030)	50	L8672c99
106	Sg LXXI	+70	Seaborgium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(5 410)	60	L8672c99
106	Sg LXXII	+71	Seaborgium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(5 490)	60	L8672c99
106	Sg LXXIII	+72	Seaborgium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(5 590)	70	L8672c99
106	Sg LXXIV	+73	Seaborgium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(5 680)	90	L8672c99
106	Sg LXXV	+74	Seaborgium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(6 460)	90	L8672c99
106	Sg LXXVI	+75	Seaborgium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(6 570)	100	L8672c99
106	Sg LXXVII	+76	Seaborgium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(6 840)	110	L8672c99
106	Sg LXXVIII	+77	Seaborgium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	(6 950)	120	L8672c99
106	Sg LXXIX	+78	Seaborgium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(10 680)	120	L8672c99
106	Sg LXXX	+79	Seaborgium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(10 870)	140	L8672c99
106	Sg LXXXI	+80	Seaborgium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(11 080)	150	L8672c99
106	Sg LXXXII	+81	Seaborgium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(11 300)	160	L8672c99
106	Sg LXXXIII	+82	Seaborgium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(11 510)	170	L8672c99
106	Sg LXXXIV	+83	Seaborgium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(11 710)	190	L8672c99
106	Sg LXXXV	+84	Seaborgium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(12 320)	200	L8672c99
106	Sg LXXXVI	+85	Seaborgium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(12 540)	220	L8672c99
106	Sg LXXXVII	+86	Seaborgium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(12 780)	240	L8672c99
106	Sg LXXXVIII	+87	Seaborgium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(12 990)	250	L8672c99
106	Sg LXXXIX	+88	Seaborgium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(13 600)	300	L8672c99
106	Sg XC	+89	Seaborgium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(13 800)	300	L8672c99
106	Sg XCI	+90	Seaborgium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(14 000)	300	L8672c99
106	Sg XCII	+91	Seaborgium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(14 200)	300	L8672c99
106	Sg XCIII	+92	Seaborgium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(16 600)	400	L8672c99
106	Sg XCIV	+93	Seaborgium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(16 800)	400	L8672c99
106	Sg XCV	+94	Seaborgium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(17 300)	400	L8672c99
106	Sg XCVI	+95	Seaborgium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(17 500)	400	L8672c99
106	Sg XCVII	+96	Seaborgium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(34 500)	400	L8672c99
106	Sg XCVIII	+97	Seaborgium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(35 000)	400	L8672c99
106	Sg XCIX	+98	Seaborgium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(35 600)	500	L8672c99
106	Sg C	+99	Seaborgium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(36 100)	500	L8672c99
106	Sg CI	+100	Seaborgium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(44 900)	500	L8672c99
106	Sg CII	+101	Seaborgium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(45 700)	500	L8672c99
106	Sg CIII	+102	Seaborgium	Be	1s²2s²	¹S₀	2s ²S_1/2	(46 600)	500	L8672c99
106	Sg CIV	+103	Seaborgium	Li	1s²2s	²S_¹/₂	1s² ¹S₀
106	Sg CV	+104	Seaborgium	He	1s²	¹S₀	1s ²S_1/2
106	Sg CVI	+105	Seaborgium	H	1s	²S_¹/₂		(185 839)	10	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶
[Kr] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶
[Cd] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²
[Xe] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶
[Rn] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶4f¹⁴5d¹⁰6s²6p⁶
^bIf the listed ionization energy is blank, it is unknown. Only the ground state is known.
^cUncertainties of some of the listed values are unknown.

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Bh (all spectra) 96 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy ^b (eV)	Uncertainty^c (eV)	References
107	Bh I	0	Bohrium	Bh	[Rn]5f¹⁴6d⁵7s²	_⁵/₂	6d⁴7s² ₀	[7.7]	0.5	L13544
107	Bh II	+1	Bohrium	Sg	[Rn]5f¹⁴6d⁴7s²	₀	6d⁴7s _1/2	[17.5]	0.5	L13544
107	Bh III	+2	Bohrium	Db	[Rn]5f¹⁴6d⁴7s	_¹/₂	6d⁴ ₀	[26.7]	0.5	L13544
107	Bh IV	+3	Bohrium	Rf	[Rn]5f¹⁴6d⁴	₀	6d³ _3/2	[37.3]	0.5	L13544
107	Bh V	+4	Bohrium	Lr	[Rn]5f¹⁴6d³	_³/₂	6d² ₂	[49.0]	0.5	L13544
107	Bh VI	+5	Bohrium	No	[Rn]5f¹⁴6d²	₂	5f¹⁴6d ²D_3/2	[62.1]	0.5	L13544
107	Bh VII	+6	Bohrium	Md	[Rn]5f¹⁴6d	²D_³/₂	5f¹⁴ ¹S₀	[74.9]	0.5	L13544
107	Bh VIII	+7	Bohrium	Fm	[Rn]5f¹⁴	¹S₀	5f¹³ ²F°_7/2	(134.0)	2.1	L8672c99
107	Bh IX	+8	Bohrium	Es	[Rn]5f¹³	²F°_⁷/₂	5f¹² ³H₆	(148.0)	2.2	L8672c99
107	Bh X	+9	Bohrium	Cf	[Rn]5f¹²	³H₆	5f¹¹ ⁴I°_15/2	(178.0)	2.2	L8672c99
107	Bh XI	+10	Bohrium	Bk	[Rn]5f¹¹	⁴I°_¹⁵/₂	5f¹⁰ ⁵I₈	(198.0)	2.4	L8672c99
107	Bh XII	+11	Bohrium	Cm	[Rn]5f¹⁰	⁵I₈	5f⁹ ⁶H°_15/2	(228.0)	2.5	L8672c99
107	Bh XIII	+12	Bohrium	Am	[Rn]5f⁹	⁶H°_¹⁵/₂	5f⁸ ⁷F₆	(255)	3	L8672c99
107	Bh XIV	+13	Bohrium	Pu	[Rn]5f⁸	⁷F₆	5f⁷ ⁸S°_7/2	(281)	3	L8672c99
107	Bh XV	+14	Bohrium	Np	[Rn]5f⁷	⁸S°_⁷/₂	5f⁶ ⁷F₀	(318)	3	L8672c99
107	Bh XVI	+15	Bohrium	U	[Rn]5f⁶	⁷F₀	5f⁵ ⁶H°_5/2	(337)	3	L8672c99
107	Bh XVII	+16	Bohrium	Pa	[Rn]5f⁵	⁶H°_⁵/₂	5f⁴ ⁵I₄	(374)	3	L8672c99
107	Bh XVIII	+17	Bohrium	Th	[Rn]5f⁴	⁵I₄
107	Bh XXX	+29	Bohrium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(934)	4	L8672c99
107	Bh XXXI	+30	Bohrium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(969)	4	L8672c99
107	Bh XXXII	+31	Bohrium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(1 008)	4	L8672c99
107	Bh XXXIII	+32	Bohrium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(1 049)	4	L8672c99
107	Bh XXXIV	+33	Bohrium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(1 088)	5	L8672c99
107	Bh XXXV	+34	Bohrium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(1 126)	5	L8672c99
107	Bh XXXVI	+35	Bohrium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(1 197)	5	L8672c99
107	Bh XXXVII	+36	Bohrium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(1 237)	5	L8672c99
107	Bh XXXVIII	+37	Bohrium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(1 280)	4	L8672c99
107	Bh XXXIX	+38	Bohrium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(1 320)	4	L8672c99
107	Bh XL	+39	Bohrium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2
107	Bh XLI	+40	Bohrium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂
107	Bh XLII	+41	Bohrium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2
107	Bh XLIII	+42	Bohrium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀
107	Bh XLIV	+43	Bohrium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2
107	Bh XLV	+44	Bohrium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀
107	Bh XLVI	+45	Bohrium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2
107	Bh XLVII	+46	Bohrium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀
107	Bh XLVIII	+47	Bohrium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2
107	Bh XLIX	+48	Bohrium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²
107	Bh L	+49	Bohrium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2
107	Bh LI	+50	Bohrium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈
107	Bh LII	+51	Bohrium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2
107	Bh LIII	+52	Bohrium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆
107	Bh LIV	+53	Bohrium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2
107	Bh LV	+54	Bohrium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀
107	Bh LVI	+55	Bohrium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2
107	Bh LVII	+56	Bohrium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄
107	Bh LVIII	+57	Bohrium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2
107	Bh LIX	+58	Bohrium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄
107	Bh LX	+59	Bohrium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2
107	Bh LXI	+60	Bohrium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀
107	Bh LXII	+61	Bohrium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(4 216)	12	L8672c99
107	Bh LXIII	+62	Bohrium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(4 301)	15	L8672c99
107	Bh LXIV	+63	Bohrium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(4 390)	19	L8672c99
107	Bh LXV	+64	Bohrium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(4 486)	24	L8672c99
107	Bh LXVI	+65	Bohrium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(4 580)	30	L8672c99
107	Bh LXVII	+66	Bohrium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(4 660)	40	L8672c99
107	Bh LXVIII	+67	Bohrium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(4 890)	40	L8672c99
107	Bh LXIX	+68	Bohrium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(4 980)	50	L8672c99
107	Bh LXX	+69	Bohrium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(5 080)	50	L8672c99
107	Bh LXXI	+70	Bohrium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(5 170)	60	L8672c99
107	Bh LXXII	+71	Bohrium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(5 550)	60	L8672c99
107	Bh LXXIII	+72	Bohrium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(5 640)	70	L8672c99
107	Bh LXXIV	+73	Bohrium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(5 740)	90	L8672c99
107	Bh LXXV	+74	Bohrium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(5 830)	90	L8672c99
107	Bh LXXVI	+75	Bohrium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(6 650)	100	L8672c99
107	Bh LXXVII	+76	Bohrium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(6 760)	110	L8672c99
107	Bh LXXVIII	+77	Bohrium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(7 040)	120	L8672c99
107	Bh LXXIX	+78	Bohrium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	(7 140)	120	L8672c99
107	Bh LXXX	+79	Bohrium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(10 930)	140	L8672c99
107	Bh LXXXI	+80	Bohrium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(11 130)	150	L8672c99
107	Bh LXXXII	+81	Bohrium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(11 340)	160	L8672c99
107	Bh LXXXIII	+82	Bohrium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(11 560)	170	L8672c99
107	Bh LXXXIV	+83	Bohrium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(11 780)	190	L8672c99
107	Bh LXXXV	+84	Bohrium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(11 980)	200	L8672c99
107	Bh LXXXVI	+85	Bohrium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(12 610)	220	L8672c99
107	Bh LXXXVII	+86	Bohrium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(12 830)	240	L8672c99
107	Bh LXXXVIII	+87	Bohrium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(13 070)	250	L8672c99
107	Bh LXXXIX	+88	Bohrium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(13 300)	300	L8672c99
107	Bh XC	+89	Bohrium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(13 900)	300	L8672c99
107	Bh XCI	+90	Bohrium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(14 100)	300	L8672c99
107	Bh XCII	+91	Bohrium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(14 300)	300	L8672c99
107	Bh XCIII	+92	Bohrium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(14 500)	400	L8672c99
107	Bh XCIV	+93	Bohrium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(17 000)	400	L8672c99
107	Bh XCV	+94	Bohrium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(17 300)	400	L8672c99
107	Bh XCVI	+95	Bohrium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(17 700)	400	L8672c99
107	Bh XCVII	+96	Bohrium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(18 000)	400	L8672c99
107	Bh XCVIII	+97	Bohrium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(35 200)	400	L8672c99
107	Bh XCIX	+98	Bohrium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(35 700)	500	L8672c99
107	Bh C	+99	Bohrium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(36 300)	500	L8672c99
107	Bh CI	+100	Bohrium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(36 800)	500	L8672c99
107	Bh CII	+101	Bohrium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(46 100)	500	L8672c99
107	Bh CIII	+102	Bohrium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(46 900)	500	L8672c99
107	Bh CIV	+103	Bohrium	Be	1s²2s²	¹S₀	2s ²S_1/2	(47 800)	500	L8672c99
107	Bh CV	+104	Bohrium	Li	1s²2s	²S_¹/₂	1s² ¹S₀
107	Bh CVI	+105	Bohrium	He	1s²	¹S₀	1s ²S_1/2
107	Bh CVII	+106	Bohrium	H	1s	²S_¹/₂		(190 331)	11	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶
[Kr] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶
[Cd] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²
[Xe] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶
[Rn] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶4f¹⁴5d¹⁰6s²6p⁶
^bIf the listed ionization energy is blank, it is unknown. Only the ground state is known.
^cUncertainties of some of the listed values are unknown.

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Hs (all spectra) 97 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy ^b (eV)	Uncertainty^c (eV)	References
108	Hs I	0	Hassium	Hs	[Rn]5f¹⁴6d⁶7s²	₄	6d⁵7s² _5/2	[7.6]	0.5	L13544
108	Hs II	+1	Hassium	Bh	[Rn]5f¹⁴6d⁵7s²	_⁵/₂	6d⁵7s ₃	[18.2]	0.5	L13544
108	Hs III	+2	Hassium	Sg	[Rn]5f¹⁴6d⁵7s	₃	6d⁴7s _1/2	[29.3]	0.5	L13544
108	Hs IV	+3	Hassium	Db	[Rn]5f¹⁴6d⁴7s	_¹/₂	6d⁴ ₀	[37.7]	0.5	L13544
108	Hs V	+4	Hassium	Rf	[Rn]5f¹⁴6d⁴	₀	6d³ _3/2	[51.2]	0.5	L13544
108	Hs VI	+5	Hassium	Lr	[Rn]5f¹⁴6d³	_³/₂	6d² ₂	[64.0]	0.5	L13544
108	Hs VII	+6	Hassium	No	[Rn]5f¹⁴6d²	₂	5f¹⁴6d ²D_3/2	[78.1]	0.5	L13544
108	Hs VIII	+7	Hassium	Md	[Rn]5f¹⁴6d	²D_³/₂	5f¹⁴ ¹S₀	[91.7]	0.5	L13544
108	Hs IX	+8	Hassium	Fm	[Rn]5f¹⁴	¹S₀	5f¹³ ²F°_7/2	(159.9)	2.2	L8672c99
108	Hs X	+9	Hassium	Es	[Rn]5f¹³	²F°_⁷/₂	5f¹² ³H₆	(173.9)	2.2	L8672c99
108	Hs XI	+10	Hassium	Cf	[Rn]5f¹²	³H₆	5f¹¹ ⁴I°_15/2	(206.1)	2.4	L8672c99
108	Hs XII	+11	Hassium	Bk	[Rn]5f¹¹	⁴I°_¹⁵/₂	5f¹⁰ ⁵I₈	(227.0)	2.5	L8672c99
108	Hs XIII	+12	Hassium	Cm	[Rn]5f¹⁰	⁵I₈	5f⁹ ⁶H°_15/2	(258)	3	L8672c99
108	Hs XIV	+13	Hassium	Am	[Rn]5f⁹	⁶H°_¹⁵/₂	5f⁸ ⁷F₆	(285)	3	L8672c99
108	Hs XV	+14	Hassium	Pu	[Rn]5f⁸	⁷F₆	5f⁷ ⁸S°_7/2	(314)	3	L8672c99
108	Hs XVI	+15	Hassium	Np	[Rn]5f⁷	⁸S°_⁷/₂	5f⁶ ⁷F₀	(351)	3	L8672c99
108	Hs XVII	+16	Hassium	U	[Rn]5f⁶	⁷F₀	5f⁵ ⁶H°_5/2	(371)	3	L8672c99
108	Hs XVIII	+17	Hassium	Pa	[Rn]5f⁵	⁶H°_⁵/₂	5f⁴ ⁵I₄	(409)	3	L8672c99
108	Hs XIX	+18	Hassium	Th	[Rn]5f⁴	⁵I₄
108	Hs XXXI	+30	Hassium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(984)	4	L8672c99
108	Hs XXXII	+31	Hassium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(1 020)	4	L8672c99
108	Hs XXXIII	+32	Hassium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(1 060)	4	L8672c99
108	Hs XXXIV	+33	Hassium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(1 101)	5	L8672c99
108	Hs XXXV	+34	Hassium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(1 140)	5	L8672c99
108	Hs XXXVI	+35	Hassium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(1 180)	5	L8672c99
108	Hs XXXVII	+36	Hassium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(1 253)	5	L8672c99
108	Hs XXXVIII	+37	Hassium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(1 294)	4	L8672c99
108	Hs XXXIX	+38	Hassium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(1 338)	4	L8672c99
108	Hs XL	+39	Hassium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(1 379)	4	L8672c99
108	Hs XLI	+40	Hassium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2
108	Hs XLII	+41	Hassium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂
108	Hs XLIII	+42	Hassium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2
108	Hs XLIV	+43	Hassium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀
108	Hs XLV	+44	Hassium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2
108	Hs XLVI	+45	Hassium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀
108	Hs XLVII	+46	Hassium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2
108	Hs XLVIII	+47	Hassium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀
108	Hs XLIX	+48	Hassium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2
108	Hs L	+49	Hassium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²
108	Hs LI	+50	Hassium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2
108	Hs LII	+51	Hassium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈
108	Hs LIII	+52	Hassium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2
108	Hs LIV	+53	Hassium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆
108	Hs LV	+54	Hassium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2
108	Hs LVI	+55	Hassium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀
108	Hs LVII	+56	Hassium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2
108	Hs LVIII	+57	Hassium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄
108	Hs LIX	+58	Hassium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2
108	Hs LX	+59	Hassium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄
108	Hs LXI	+60	Hassium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2
108	Hs LXII	+61	Hassium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀
108	Hs LXIII	+62	Hassium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(4 339)	15	L8672c99
108	Hs LXIV	+63	Hassium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(4 425)	19	L8672c99
108	Hs LXV	+64	Hassium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(4 516)	24	L8672c99
108	Hs LXVI	+65	Hassium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(4 610)	30	L8672c99
108	Hs LXVII	+66	Hassium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(4 700)	40	L8672c99
108	Hs LXVIII	+67	Hassium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(4 790)	40	L8672c99
108	Hs LXIX	+68	Hassium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(5 020)	50	L8672c99
108	Hs LXX	+69	Hassium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(5 110)	50	L8672c99
108	Hs LXXI	+70	Hassium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(5 220)	60	L8672c99
108	Hs LXXII	+71	Hassium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(5 310)	60	L8672c99
108	Hs LXXIII	+72	Hassium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(5 700)	70	L8672c99
108	Hs LXXIV	+73	Hassium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(5 780)	90	L8672c99
108	Hs LXXV	+74	Hassium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(5 880)	90	L8672c99
108	Hs LXXVI	+75	Hassium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(5 980)	100	L8672c99
108	Hs LXXVII	+76	Hassium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(6 840)	110	L8672c99
108	Hs LXXVIII	+77	Hassium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(6 950)	120	L8672c99
108	Hs LXXIX	+78	Hassium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(7 230)	120	L8672c99
108	Hs LXXX	+79	Hassium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	(7 340)	140	L8672c99
108	Hs LXXXI	+80	Hassium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(11 200)	150	L8672c99
108	Hs LXXXII	+81	Hassium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(11 390)	160	L8672c99
108	Hs LXXXIII	+82	Hassium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(11 610)	170	L8672c99
108	Hs LXXXIV	+83	Hassium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(11 830)	190	L8672c99
108	Hs LXXXV	+84	Hassium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(12 040)	200	L8672c99
108	Hs LXXXVI	+85	Hassium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(12 250)	220	L8672c99
108	Hs LXXXVII	+86	Hassium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(12 910)	240	L8672c99
108	Hs LXXXVIII	+87	Hassium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(13 130)	250	L8672c99
108	Hs LXXXIX	+88	Hassium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(13 400)	300	L8672c99
108	Hs XC	+89	Hassium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(13 600)	300	L8672c99
108	Hs XCI	+90	Hassium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(14 200)	300	L8672c99
108	Hs XCII	+91	Hassium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(14 400)	300	L8672c99
108	Hs XCIII	+92	Hassium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(14 600)	400	L8672c99
108	Hs XCIV	+93	Hassium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(14 800)	400	L8672c99
108	Hs XCV	+94	Hassium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(17 500)	400	L8672c99
108	Hs XCVI	+95	Hassium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(17 700)	400	L8672c99
108	Hs XCVII	+96	Hassium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(18 200)	400	L8672c99
108	Hs XCVIII	+97	Hassium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(18 400)	400	L8672c99
108	Hs XCIX	+98	Hassium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(35 900)	500	L8672c99
108	Hs C	+99	Hassium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(36 400)	500	L8672c99
108	Hs CI	+100	Hassium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(37 000)	500	L8672c99
108	Hs CII	+101	Hassium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(37 500)	500	L8672c99
108	Hs CIII	+102	Hassium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(47 300)	500	L8672c99
108	Hs CIV	+103	Hassium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(48 100)	500	L8672c99
108	Hs CV	+104	Hassium	Be	1s²2s²	¹S₀	2s ²S_1/2	(49 000)	600	L8672c99
108	Hs CVI	+105	Hassium	Li	1s²2s	²S_¹/₂	1s² ¹S₀
108	Hs CVII	+106	Hassium	He	1s²	¹S₀	1s ²S_1/2
108	Hs CVIII	+107	Hassium	H	1s	²S_¹/₂		(194 917)	12	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶
[Kr] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶
[Cd] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²
[Xe] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶
[Rn] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶4f¹⁴5d¹⁰6s²6p⁶
^bIf the listed ionization energy is blank, it is unknown. Only the ground state is known.
^cUncertainties of some of the listed values are unknown.

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Mt (all spectra) 94 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy ^b (eV)	Uncertainty^c (eV)	References
109	Mt V	+4	Meitnerium	Db	[Rn]5f¹⁴6d⁵	_⁵/₂	6d⁴ ₀	(50.0)	1.9	L8672c99
109	Mt VI	+5	Meitnerium	Rf	[Rn]5f¹⁴6d⁴	₀	6d³ _3/2
109	Mt VII	+6	Meitnerium	Lr	[Rn]5f¹⁴6d³	_³/₂	6d² ₂
109	Mt VIII	+7	Meitnerium	No	[Rn]5f¹⁴6d²	₂	5f¹⁴6d ²D_3/2	(94.0)	2.1	L8672c99
109	Mt IX	+8	Meitnerium	Md	[Rn]5f¹⁴6d	²D_³/₂	5f¹⁴ ¹S₀	(109.0)	2.2	L8672c99
109	Mt X	+9	Meitnerium	Fm	[Rn]5f¹⁴	¹S₀	5f¹³ ²F°_7/2	(187.0)	2.2	L8672c99
109	Mt XI	+10	Meitnerium	Es	[Rn]5f¹³	²F°_⁷/₂	5f¹² ³H₆	(202.0)	2.4	L8672c99
109	Mt XII	+11	Meitnerium	Cf	[Rn]5f¹²	³H₆	5f¹¹ ⁴I°_15/2	(235.9)	2.5	L8672c99
109	Mt XIII	+12	Meitnerium	Bk	[Rn]5f¹¹	⁴I°_¹⁵/₂	5f¹⁰ ⁵I₈	(257)	3	L8672c99
109	Mt XIV	+13	Meitnerium	Cm	[Rn]5f¹⁰	⁵I₈	5f⁹ ⁶H°_15/2	(289)	3	L8672c99
109	Mt XV	+14	Meitnerium	Am	[Rn]5f⁹	⁶H°_¹⁵/₂	5f⁸ ⁷F₆	(318)	3	L8672c99
109	Mt XVI	+15	Meitnerium	Pu	[Rn]5f⁸	⁷F₆	5f⁷ ⁸S°_7/2	(346)	3	L8672c99
109	Mt XVII	+16	Meitnerium	Np	[Rn]5f⁷	⁸S°_⁷/₂	5f⁶ ⁷F₀	(386)	3	L8672c99
109	Mt XVIII	+17	Meitnerium	U	[Rn]5f⁶	⁷F₀	5f⁵ ⁶H°_5/2	(406)	3	L8672c99
109	Mt XIX	+18	Meitnerium	Pa	[Rn]5f⁵	⁶H°_⁵/₂	5f⁴ ⁵I₄	(445)	3	L8672c99
109	Mt XX	+19	Meitnerium	Th	[Rn]5f⁴	⁵I₄
109	Mt XXXII	+31	Meitnerium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(1 035)	4	L8672c99
109	Mt XXXIII	+32	Meitnerium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(1 072)	4	L8672c99
109	Mt XXXIV	+33	Meitnerium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(1 112)	5	L8672c99
109	Mt XXXV	+34	Meitnerium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(1 154)	5	L8672c99
109	Mt XXXVI	+35	Meitnerium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(1 195)	5	L8672c99
109	Mt XXXVII	+36	Meitnerium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(1 234)	5	L8672c98,c99
109	Mt XXXVIII	+37	Meitnerium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(1 311)	4	L8672c98,c99
109	Mt XXXIX	+38	Meitnerium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(1 352)	4	L8672c99
109	Mt XL	+39	Meitnerium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(1 397)	4	L8672c99
109	Mt XLI	+40	Meitnerium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(1 439)	4	L8672c99
109	Mt XLII	+41	Meitnerium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2
109	Mt XLIII	+42	Meitnerium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂
109	Mt XLIV	+43	Meitnerium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2
109	Mt XLV	+44	Meitnerium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀
109	Mt XLVI	+45	Meitnerium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2
109	Mt XLVII	+46	Meitnerium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀
109	Mt XLVIII	+47	Meitnerium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2
109	Mt XLIX	+48	Meitnerium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀
109	Mt L	+49	Meitnerium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2
109	Mt LI	+50	Meitnerium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²
109	Mt LII	+51	Meitnerium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2
109	Mt LIII	+52	Meitnerium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈
109	Mt LIV	+53	Meitnerium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2
109	Mt LV	+54	Meitnerium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆
109	Mt LVI	+55	Meitnerium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2
109	Mt LVII	+56	Meitnerium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀
109	Mt LVIII	+57	Meitnerium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2
109	Mt LIX	+58	Meitnerium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄
109	Mt LX	+59	Meitnerium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2
109	Mt LXI	+60	Meitnerium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄
109	Mt LXII	+61	Meitnerium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2
109	Mt LXIII	+62	Meitnerium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀
109	Mt LXIV	+63	Meitnerium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(4 464)	19	L8672c99
109	Mt LXV	+64	Meitnerium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(4 551)	24	L8672c99
109	Mt LXVI	+65	Meitnerium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(4 640)	30	L8672c99
109	Mt LXVII	+66	Meitnerium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(4 740)	40	L8672c99
109	Mt LXVIII	+67	Meitnerium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(4 830)	40	L8672c99
109	Mt LXIX	+68	Meitnerium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(4 920)	50	L8672c99
109	Mt LXX	+69	Meitnerium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(5 160)	50	L8672c99
109	Mt LXXI	+70	Meitnerium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(5 250)	60	L8672c99
109	Mt LXXII	+71	Meitnerium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(5 360)	60	L8672c99
109	Mt LXXIII	+72	Meitnerium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(5 450)	70	L8672c99
109	Mt LXXIV	+73	Meitnerium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(5 840)	90	L8672c99
109	Mt LXXV	+74	Meitnerium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(5 930)	90	L8672c99
109	Mt LXXVI	+75	Meitnerium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(6 030)	100	L8672c99
109	Mt LXXVII	+76	Meitnerium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(6 130)	110	L8672c99
109	Mt LXXVIII	+77	Meitnerium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(7 030)	120	L8672c99
109	Mt LXXIX	+78	Meitnerium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(7 150)	120	L8672c99
109	Mt LXXX	+79	Meitnerium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(7 430)	140	L8672c99
109	Mt LXXXI	+80	Meitnerium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	(7 550)	150	L8672c99
109	Mt LXXXII	+81	Meitnerium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(11 460)	160	L8672c99
109	Mt LXXXIII	+82	Meitnerium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(11 660)	170	L8672c99
109	Mt LXXXIV	+83	Meitnerium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(11 870)	190	L8672c99
109	Mt LXXXV	+84	Meitnerium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(12 100)	200	L8672c99
109	Mt LXXXVI	+85	Meitnerium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(12 320)	220	L8672c99
109	Mt LXXXVII	+86	Meitnerium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(12 530)	240	L8672c99
109	Mt LXXXVIII	+87	Meitnerium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(13 200)	250	L8672c99
109	Mt LXXXIX	+88	Meitnerium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(13 400)	300	L8672c99
109	Mt XC	+89	Meitnerium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(13 700)	300	L8672c99
109	Mt XCI	+90	Meitnerium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(13 900)	300	L8672c99
109	Mt XCII	+91	Meitnerium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(14 500)	300	L8672c99
109	Mt XCIII	+92	Meitnerium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(14 700)	400	L8672c99
109	Mt XCIV	+93	Meitnerium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(14 900)	400	L8672c99
109	Mt XCV	+94	Meitnerium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(15 100)	400	L8672c99
109	Mt XCVI	+95	Meitnerium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(17 900)	400	L8672c99
109	Mt XCVII	+96	Meitnerium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(18 200)	400	L8672c99
109	Mt XCVIII	+97	Meitnerium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(18 700)	400	L8672c99
109	Mt XCIX	+98	Meitnerium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(18 900)	500	L8672c99
109	Mt C	+99	Meitnerium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(36 700)	500	L8672c99
109	Mt CI	+100	Meitnerium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(37 200)	500	L8672c99
109	Mt CII	+101	Meitnerium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(37 800)	500	L8672c99
109	Mt CIII	+102	Meitnerium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(38 300)	500	L8672c99
109	Mt CIV	+103	Meitnerium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(48 500)	500	L8672c99
109	Mt CV	+104	Meitnerium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(49 400)	600	L8672c99
109	Mt CVI	+105	Meitnerium	Be	1s²2s²	¹S₀	2s ²S_1/2	(50 300)	600	L8672c99
109	Mt CVII	+106	Meitnerium	Li	1s²2s	²S_¹/₂	1s² ¹S₀
109	Mt CVIII	+107	Meitnerium	He	1s²	¹S₀	1s ²S_1/2
109	Mt CIX	+108	Meitnerium	H	1s	²S_¹/₂		(199 606)	14	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶
[Kr] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶
[Cd] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²
[Xe] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶
[Rn] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶4f¹⁴5d¹⁰6s²6p⁶
^bIf the listed ionization energy is blank, it is unknown. Only the ground state is known.
^cUncertainties of some of the listed values are unknown.

If you did not find the data you need, please inform the ASD Team.

NIST Atomic Ionization Energies Output

NIST Atomic Spectra Database Ionization Energies Data Ds (all spectra) 94 Data Rows Found	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2018). NIST Atomic Spectra Database (ver. 5.6.1), [Online]. Available: https://physics.nist.gov/asd [2019, June 18]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

At. Num.	Sp. Name.	Ion Charge	El. name	Isoel. Seq.	Ground Shells ^a	Ground Level	Ionized Level	Ionization Energy ^b (eV)	Uncertainty^c (eV)	References
110	Ds VI	+5	Darmstadtium	Db	[Rn]5f¹⁴6d⁵	_⁵/₂	6d⁴ ₀	(65.0)	2.0	L8672c99
110	Ds VII	+6	Darmstadtium	Rf	[Rn]5f¹⁴6d⁴	₀	6d³ _3/2
110	Ds VIII	+7	Darmstadtium	Lr	[Rn]5f¹⁴6d³	_³/₂	6d² ₂
110	Ds IX	+8	Darmstadtium	No	[Rn]5f¹⁴6d²	₂	5f¹⁴6d ²D_3/2	(112.9)	2.2	L8672c99
110	Ds X	+9	Darmstadtium	Md	[Rn]5f¹⁴6d	²D_³/₂	5f¹⁴ ¹S₀	(128.0)	2.2	L8672c99
110	Ds XI	+10	Darmstadtium	Fm	[Rn]5f¹⁴	¹S₀	5f¹³ ²F°_7/2	(216.0)	2.4	L8672c99
110	Ds XII	+11	Darmstadtium	Es	[Rn]5f¹³	²F°_⁷/₂	5f¹² ³H₆	(231.0)	2.5	L8672c99
110	Ds XIII	+12	Darmstadtium	Cf	[Rn]5f¹²	³H₆	5f¹¹ ⁴I°_15/2	(266)	3	L8672c99
110	Ds XIV	+13	Darmstadtium	Bk	[Rn]5f¹¹	⁴I°_¹⁵/₂	5f¹⁰ ⁵I₈	(288)	3	L8672c99
110	Ds XV	+14	Darmstadtium	Cm	[Rn]5f¹⁰	⁵I₈	5f⁹ ⁶H°_15/2	(322)	3	L8672c99
110	Ds XVI	+15	Darmstadtium	Am	[Rn]5f⁹	⁶H°_¹⁵/₂	5f⁸ ⁷F₆	(352)	3	L8672c99
110	Ds XVII	+16	Darmstadtium	Pu	[Rn]5f⁸	⁷F₆	5f⁷ ⁸S°_7/2	(380)	3	L8672c99
110	Ds XVIII	+17	Darmstadtium	Np	[Rn]5f⁷	⁸S°_⁷/₂	5f⁶ ⁷F₀	(422)	3	L8672c99
110	Ds XIX	+18	Darmstadtium	U	[Rn]5f⁶	⁷F₀	5f⁵ ⁶H°_5/2	(442)	3	L8672c99
110	Ds XX	+19	Darmstadtium	Pa	[Rn]5f⁵	⁶H°_⁵/₂	5f⁴ ⁵I₄	(483)	4	L8672c99
110	Ds XXI	+20	Darmstadtium	Th	[Rn]5f⁴	⁵I₄
110	Ds XXXIII	+32	Darmstadtium	Pt	[Xe]4f¹⁴5d¹⁰	¹S₀	5d⁹ ²D_5/2	(1 087)	4	L8672c99
110	Ds XXXIV	+33	Darmstadtium	Ir	[Xe]4f¹⁴5d⁹	²D_⁵/₂	5d⁸ ³F₄	(1 125)	5	L8672c99
110	Ds XXXV	+34	Darmstadtium	Os	[Xe]4f¹⁴5d⁸	³F₄	5d⁷ ⁴F_9/2	(1 165)	5	L8672c99
110	Ds XXXVI	+35	Darmstadtium	Re	[Xe]4f¹⁴5d⁷	⁴F_⁹/₂	5d⁶ ⁵D₄	(1 208)	5	L8672c98,c99
110	Ds XXXVII	+36	Darmstadtium	W	[Xe]4f¹⁴5d⁶	⁵D₄	5d⁵ ⁶S_5/2	(1 250)	5	L8672c98,c99
110	Ds XXXVIII	+37	Darmstadtium	Ta	[Xe]4f¹⁴5d⁵	⁶S_⁵/₂	5d⁴ ⁵D₀	(1 290)	4	L8672c99
110	Ds XXXIX	+38	Darmstadtium	Hf	[Xe]4f¹⁴5d⁴	⁵D₀	5d³ ⁴F_3/2	(1 369)	4	L8672c99
110	Ds XL	+39	Darmstadtium	Lu	[Xe]4f¹⁴5d³	⁴F_³/₂	5d² ³F₂	(1 412)	4	L8672c99
110	Ds XLI	+40	Darmstadtium	Yb	[Xe]4f¹⁴5d²	³F₂	5d ²D_3/2	(1 457)	4	L8672c99
110	Ds XLII	+41	Darmstadtium	Tm	[Xe]4f¹⁴5d	²D_³/₂	4f¹⁴ ¹S₀	(1 500)	4	L8672c99
110	Ds XLIII	+42	Darmstadtium	Er	[Xe]4f¹⁴	¹S₀	4f¹⁴5p⁵ ²P°_3/2
110	Ds XLIV	+43	Darmstadtium	Ho	[Cd]4f¹⁴5p⁵	²P°_³/₂	4f¹⁴5p⁴ ³P₂
110	Ds XLV	+44	Darmstadtium	Dy	[Cd]4f¹⁴5p⁴	³P₂	4f¹⁴5p³ ²P°_3/2
110	Ds XLVI	+45	Darmstadtium	Tb	[Cd]4f¹⁴5p³	²P°_³/₂	4f¹⁴5p² ³P₀
110	Ds XLVII	+46	Darmstadtium	Gd	[Cd]4f¹⁴5p²	³P₀	4f¹⁴5p ²P°_1/2
110	Ds XLVIII	+47	Darmstadtium	Eu	[Cd]4f¹⁴5p	²P°_¹/₂	4f¹⁴ ¹S₀
110	Ds XLIX	+48	Darmstadtium	Sm	[Cd]4f¹⁴	¹S₀	4f¹⁴5s ²S_1/2
110	Ds L	+49	Darmstadtium	Pm	[Kr]4d¹⁰4f¹⁴5s	²S_¹/₂	4f¹⁴ ¹S₀
110	Ds LI	+50	Darmstadtium	Nd	[Kr]4d¹⁰4f¹⁴	¹S₀	4f¹³ ²F°_7/2
110	Ds LII	+51	Darmstadtium	Pr	[Kr]4d¹⁰4f¹³	²F°_⁷/₂	4f¹²
110	Ds LIII	+52	Darmstadtium	Ce	[Kr]4d¹⁰4f¹²		4f¹¹ ⁴I°_15/2
110	Ds LIV	+53	Darmstadtium	La	[Kr]4d¹⁰4f¹¹	⁴I°_¹⁵/₂	4f¹⁰ ⁵I₈
110	Ds LV	+54	Darmstadtium	Ba	[Kr]4d¹⁰4f¹⁰	⁵I₈	4f⁹ ⁶H°_15/2
110	Ds LVI	+55	Darmstadtium	Cs	[Kr]4d¹⁰4f⁹	⁶H°_¹⁵/₂	4f⁸ ⁷F₆
110	Ds LVII	+56	Darmstadtium	Xe	[Kr]4d¹⁰4f⁸	⁷F₆	4f⁷ ⁸S°_7/2
110	Ds LVIII	+57	Darmstadtium	I	[Kr]4d¹⁰4f⁷	⁸S°_⁷/₂	4f⁶ ⁷F₀
110	Ds LIX	+58	Darmstadtium	Te	[Kr]4d¹⁰4f⁶	⁷F₀	4f⁵ ⁶H°_5/2
110	Ds LX	+59	Darmstadtium	Sb	[Kr]4d¹⁰4f⁵	⁶H°_⁵/₂	4f⁴ ⁵I₄
110	Ds LXI	+60	Darmstadtium	Sn	[Kr]4d¹⁰4f⁴	⁵I₄	4f³ ⁴I°_9/2
110	Ds LXII	+61	Darmstadtium	In	[Kr]4d¹⁰4f³	⁴I°_⁹/₂	4f² ³H₄
110	Ds LXIII	+62	Darmstadtium	Cd	[Kr]4d¹⁰4f²	³H₄	4f ²F°_5/2
110	Ds LXIV	+63	Darmstadtium	Ag	[Kr]4d¹⁰4f	²F°_⁵/₂	4d¹⁰ ¹S₀
110	Ds LXV	+64	Darmstadtium	Pd	[Kr]4d¹⁰	¹S₀	4d⁹ ²D_5/2	(4 590)	24	L8672c99
110	Ds LXVI	+65	Darmstadtium	Rh	[Kr]4d⁹	²D_⁵/₂	4d⁸ ³F₄	(4 680)	30	L8672c99
110	Ds LXVII	+66	Darmstadtium	Ru	[Kr]4d⁸	³F₄	4d⁷ ⁴F_9/2	(4 770)	40	L8672c99
110	Ds LXVIII	+67	Darmstadtium	Tc	[Kr]4d⁷	⁴F_⁹/₂	4d⁶ ⁵D₄	(4 870)	40	L8672c99
110	Ds LXIX	+68	Darmstadtium	Mo	[Kr]4d⁶	⁵D₄	4d⁵ _5/2	(4 960)	50	L8672c99
110	Ds LXX	+69	Darmstadtium	Nb	[Kr]4d⁵	_⁵/₂	4d⁴ ⁵D₀	(5 060)	50	L8672c99
110	Ds LXXI	+70	Darmstadtium	Zr	[Kr]4d⁴	⁵D₀	4d³ ⁴F_3/2	(5 300)	60	L8672c99
110	Ds LXXII	+71	Darmstadtium	Y	[Kr]4d³	⁴F_³/₂	4d² ³F₂	(5 400)	60	L8672c99
110	Ds LXXIII	+72	Darmstadtium	Sr	[Kr]4d²	³F₂	4d ²D_3/2	(5 500)	70	L8672c99
110	Ds LXXIV	+73	Darmstadtium	Rb	[Kr]4d	²D_³/₂	4p⁶ ¹S₀	(5 600)	90	L8672c99
110	Ds LXXV	+74	Darmstadtium	Kr	[Ar]3d¹⁰4s²4p⁶	¹S₀	4p⁵ ²P°_3/2	(5 990)	90	L8672c99
110	Ds LXXVI	+75	Darmstadtium	Br	[Ar]3d¹⁰4s²4p⁵	²P°_³/₂	4p⁴ ³P₂	(6 080)	100	L8672c99
110	Ds LXXVII	+76	Darmstadtium	Se	[Ar]3d¹⁰4s²4p⁴	³P₂	4p³°_3/2	(6 190)	110	L8672c99
110	Ds LXXVIII	+77	Darmstadtium	As	[Ar]3d¹⁰4s²4p³	°_³/₂	4p² ³P₀	(6 280)	120	L8672c99
110	Ds LXXIX	+78	Darmstadtium	Ge	[Ar]3d¹⁰4s²4p²	³P₀	4p ²P°_1/2	(7 230)	120	L8672c99
110	Ds LXXX	+79	Darmstadtium	Ga	[Ar]3d¹⁰4s²4p	²P°_¹/₂	4s² ¹S₀	(7 350)	140	L8672c99
110	Ds LXXXI	+80	Darmstadtium	Zn	[Ar]3d¹⁰4s²	¹S₀	4s ²S_1/2	(7 640)	150	L8672c99
110	Ds LXXXII	+81	Darmstadtium	Cu	[Ar]3d¹⁰4s	²S_¹/₂	3d¹⁰ ¹S₀	(7 750)	160	L8672c99
110	Ds LXXXIII	+82	Darmstadtium	Ni	[Ar]3d¹⁰	¹S₀	3d⁹ ²D_5/2	(11 730)	170	L8672c99
110	Ds LXXXIV	+83	Darmstadtium	Co	[Ar]3d⁹	²D_⁵/₂	3d⁸ ³F₄	(11 930)	190	L8672c99
110	Ds LXXXV	+84	Darmstadtium	Fe	[Ar]3d⁸	³F₄	3d⁷ ⁴F_9/2	(12 140)	200	L8672c99
110	Ds LXXXVI	+85	Darmstadtium	Mn	[Ar]3d⁷	⁴F_⁹/₂	3d⁶ ₄	(12 380)	220	L8672c99
110	Ds LXXXVII	+86	Darmstadtium	Cr	[Ar]3d⁶	₄	3d⁵ _5/2	(12 600)	240	L8672c99
110	Ds LXXXVIII	+87	Darmstadtium	V	[Ar]3d⁵	_⁵/₂	3d⁴ ⁵D₀	(12 810)	250	L8672c99
110	Ds LXXXIX	+88	Darmstadtium	Ti	[Ar]3d⁴	⁵D₀	3d³ ⁴F_3/2	(13 500)	300	L8672c99
110	Ds XC	+89	Darmstadtium	Sc	[Ar]3d³	⁴F_³/₂	3d² ³F₂	(13 700)	300	L8672c99
110	Ds XCI	+90	Darmstadtium	Ca	[Ar]3d²	³F₂	3d ²D_3/2	(14 000)	300	L8672c99
110	Ds XCII	+91	Darmstadtium	K	[Ar]3d	²D_³/₂	3p⁶ ¹S₀	(14 200)	300	L8672c99
110	Ds XCIII	+92	Darmstadtium	Ar	[Ne]3s²3p⁶	¹S₀	3p⁵ ²P°_3/2	(14 800)	400	L8672c99
110	Ds XCIV	+93	Darmstadtium	Cl	[Ne]3s²3p⁵	²P°_³/₂	3p⁴ ³P₂	(15 000)	400	L8672c99
110	Ds XCV	+94	Darmstadtium	S	[Ne]3s²3p⁴	³P₂	3p³ ²P°_3/2	(15 300)	400	L8672c99
110	Ds XCVI	+95	Darmstadtium	P	[Ne]3s²3p³	²P°_³/₂	3p² ³P₀	(15 500)	400	L8672c99
110	Ds XCVII	+96	Darmstadtium	Si	[Ne]3s²3p²	³P₀	3p ²P°_1/2	(18 400)	400	L8672c99
110	Ds XCVIII	+97	Darmstadtium	Al	[Ne]3s²3p	²P°_¹/₂	3s² ¹S₀	(18 600)	400	L8672c99
110	Ds XCIX	+98	Darmstadtium	Mg	[Ne]3s²	¹S₀	3s ²S_1/2	(19 100)	500	L8672c99
110	Ds C	+99	Darmstadtium	Na	[Ne]3s	²S_¹/₂	2p⁶ ¹S₀	(19 400)	500	L8672c99
110	Ds CI	+100	Darmstadtium	Ne	1s²2s²2p⁶	¹S₀	2p⁵ ²P°_3/2	(37 400)	500	L8672c99
110	Ds CII	+101	Darmstadtium	F	1s²2s²2p⁵	²P°_³/₂	2p⁴ ³P₂	(37 900)	500	L8672c99
110	Ds CIII	+102	Darmstadtium	O	1s²2s²2p⁴	³P₂	2p²_1/22p_3/2 (0,3/2)°_3/2	(38 500)	500	L8672c99
110	Ds CIV	+103	Darmstadtium	N	1s²2s²2p³	(0,³/₂)°_³/₂	2p² ³P₀	(39 100)	500	L8672c99
110	Ds CV	+104	Darmstadtium	C	1s²2s²2p²	³P₀	2p ²P°_1/2	(49 800)	600	L8672c99
110	Ds CVI	+105	Darmstadtium	B	1s²2s²2p	²P°_¹/₂	2s² ¹S₀	(50 700)	600	L8672c99
110	Ds CVII	+106	Darmstadtium	Be	1s²2s²	¹S₀	2s ²S_1/2	(51 600)	600	L8672c99
110	Ds CVIII	+107	Darmstadtium	Li	1s²2s	²S_¹/₂	1s² ¹S₀
110	Ds CIX	+108	Darmstadtium	He	1s²	¹S₀	1s ²S_1/2
110	Ds CX	+109	Darmstadtium	H	1s	²S_¹/₂		(204 400)	15	L7188

Notes:
^aDesignations used in the ground shell lists:
[Ne] = 1s²2s²2p⁶
[Ar] = 1s²2s²2p⁶3s²3p⁶
[Kr] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶
[Cd] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²
[Xe] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶
[Rn] = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶4f¹⁴5d¹⁰6s²6p⁶
^bIf the listed ionization energy is blank, it is unknown. Only the ground state is known.
^cUncertainties of some of the listed values are unknown.

If you did not find the data you need, please inform the ASD Team.